diff --git a/components/script/dom/blob.rs b/components/script/dom/blob.rs
index 231216815f4..bfa85bb5784 100644
--- a/components/script/dom/blob.rs
+++ b/components/script/dom/blob.rs
@@ -9,6 +9,8 @@ use dom::bindings::utils::{Reflector, reflect_dom_object};
 use dom::bindings::error::Fallible;
 use dom::bindings::codegen::Bindings::BlobBinding;
 use dom::bindings::codegen::Bindings::BlobBinding::BlobMethods;
+use std::sync::mpsc;
+use std::sync::mpsc::Receiver;
 
 use util::str::DOMString;
 
@@ -79,6 +81,22 @@ impl Blob {
     }
 }
 
+pub trait BlobHelpers {
+    fn read_out_buffer(self) -> Receiver<Option<Vec<u8>>> ;
+    fn read_out_type(self) -> DOMString;
+}
+
+impl<'a> BlobHelpers for &'a Blob {
+    fn read_out_buffer(self) -> Receiver<Option<Vec<u8>>> {
+        let (send, recv) = mpsc::channel();
+        send.send(self.bytes.clone()).unwrap();
+        recv
+    }
+    fn read_out_type(self) -> DOMString {
+        self.typeString.clone()
+    }
+}
+
 impl<'a> BlobMethods for &'a Blob {
     // http://dev.w3.org/2006/webapi/FileAPI/#dfn-size
     fn Size(self) -> u64{
diff --git a/components/script/dom/eventtarget.rs b/components/script/dom/eventtarget.rs
index 78e3eda47ff..d6de3f39617 100644
--- a/components/script/dom/eventtarget.rs
+++ b/components/script/dom/eventtarget.rs
@@ -48,6 +48,7 @@ pub enum EventTargetTypeId {
     WebSocket,
     Window,
     Worker,
+    FileReader,
     WorkerGlobalScope(WorkerGlobalScopeTypeId),
     XMLHttpRequestEventTarget(XMLHttpRequestEventTargetTypeId)
 }
diff --git a/components/script/dom/filereader.rs b/components/script/dom/filereader.rs
new file mode 100644
index 00000000000..7ac8f876157
--- /dev/null
+++ b/components/script/dom/filereader.rs
@@ -0,0 +1,491 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::Bindings::FileReaderBinding;
+use dom::bindings::codegen::Bindings::FileReaderBinding::{FileReaderConstants, FileReaderMethods};
+use dom::bindings::codegen::InheritTypes::{EventCast, EventTargetCast};
+use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
+use dom::bindings::error::{ErrorResult, Fallible};
+use dom::bindings::error::Error::InvalidState;
+use dom::bindings::global::{GlobalRef, GlobalField};
+use dom::bindings::js::{Root, JS, MutNullableHeap};
+use dom::bindings::refcounted::Trusted;
+use dom::bindings::utils::{reflect_dom_object, Reflectable};
+use dom::event::{EventHelpers, EventCancelable, EventBubbles};
+use dom::eventtarget::{EventTarget, EventTargetHelpers, EventTargetTypeId};
+use dom::blob::Blob;
+use dom::blob::BlobHelpers;
+use dom::domexception::{DOMException, DOMErrorName};
+use dom::progressevent::ProgressEvent;
+use encoding::all::UTF_8;
+use encoding::types::{EncodingRef, DecoderTrap};
+use encoding::label::encoding_from_whatwg_label;
+use hyper::mime::{Mime, Attr};
+use script_task::{ScriptChan, ScriptMsg, Runnable, ScriptPort};
+use std::cell::{Cell, RefCell};
+use std::sync::mpsc::Receiver;
+use util::str::DOMString;
+use util::task::spawn_named;
+use rustc_serialize::base64::{Config, ToBase64, CharacterSet, Newline};
+
+#[derive(PartialEq, Clone, Copy, JSTraceable)]
+pub enum FileReaderFunction {
+    ReadAsText,
+    ReadAsDataUrl,
+}
+
+pub type TrustedFileReader = Trusted<FileReader>;
+
+pub struct ReadData {
+    pub bytes: Receiver<Option<Vec<u8>>>,
+    pub blobtype: DOMString,
+    pub label: Option<DOMString>,
+    pub function: FileReaderFunction
+}
+
+impl ReadData {
+    pub fn new(bytes: Receiver<Option<Vec<u8>>>, blobtype: DOMString,
+               label: Option<DOMString>, function: FileReaderFunction) -> ReadData {
+        ReadData {
+            bytes: bytes,
+            blobtype: blobtype,
+            label: label,
+            function: function,
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct BlobBody {
+    pub bytes: Vec<u8>,
+    pub blobtype: DOMString,
+    pub label: Option<DOMString>,
+    pub function: FileReaderFunction
+}
+
+impl BlobBody {
+    pub fn new(bytes: Vec<u8>, blobtype: DOMString,
+               label: Option<DOMString>, function: FileReaderFunction) -> BlobBody {
+        BlobBody {
+            bytes: bytes,
+            blobtype: blobtype,
+            label: label,
+            function: function,
+        }
+    }
+}
+
+#[derive(PartialEq, Clone, Copy, JSTraceable)]
+pub struct GenerationId(u32);
+
+#[repr(u16)]
+#[derive(Copy, Clone, Debug, PartialEq, JSTraceable)]
+pub enum FileReaderReadyState {
+    Empty = FileReaderConstants::EMPTY,
+    Loading = FileReaderConstants::LOADING,
+    Done = FileReaderConstants::DONE,
+}
+
+#[dom_struct]
+pub struct FileReader {
+    eventtarget: EventTarget,
+    global: GlobalField,
+    ready_state: Cell<FileReaderReadyState>,
+    error: MutNullableHeap<JS<DOMException>>,
+    result: RefCell<Option<DOMString>>,
+    generation_id: Cell<GenerationId>,
+}
+
+impl FileReader {
+    pub fn new_inherited(global: GlobalRef) -> FileReader {
+        FileReader {
+            eventtarget: EventTarget::new_inherited(EventTargetTypeId::FileReader),//?
+            global: GlobalField::from_rooted(&global),
+            ready_state: Cell::new(FileReaderReadyState::Empty),
+            error: MutNullableHeap::new(None),
+            result: RefCell::new(None),
+            generation_id: Cell::new(GenerationId(0)),
+        }
+    }
+
+    pub fn new(global: GlobalRef) -> Root<FileReader> {
+        reflect_dom_object(box FileReader::new_inherited(global),
+                           global, FileReaderBinding::Wrap)
+    }
+
+    pub fn Constructor(global: GlobalRef) -> Fallible<Root<FileReader>> {
+        Ok(FileReader::new(global))
+    }
+
+    //https://w3c.github.io/FileAPI/#dfn-error-steps
+    pub fn process_read_error(filereader: TrustedFileReader, gen_id: GenerationId, error: DOMErrorName) {
+        let fr = filereader.root();
+
+        macro_rules! return_on_abort(
+            () => (
+                if gen_id != fr.generation_id.get() {
+                    return
+                }
+            );
+        );
+
+        return_on_abort!();
+        // Step 1
+        fr.change_ready_state(FileReaderReadyState::Done);
+        *fr.result.borrow_mut() = None;
+
+        let global = fr.global.root();
+        let exception = DOMException::new(global.r(), error);
+        fr.error.set(Some(JS::from_rooted(&exception)));
+
+        fr.dispatch_progress_event("error".to_owned(), 0, None);
+        return_on_abort!();
+        // Step 3
+        fr.dispatch_progress_event("loadend".to_owned(), 0, None);
+        return_on_abort!();
+        // Step 4
+        fr.terminate_ongoing_reading();
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-readAsText
+    pub fn process_read_data(filereader: TrustedFileReader, gen_id: GenerationId) {
+        let fr = filereader.root();
+
+        macro_rules! return_on_abort(
+            () => (
+                if gen_id != fr.generation_id.get() {
+                    return
+                }
+            );
+        );
+        return_on_abort!();
+        //FIXME Step 7 send current progress
+        fr.dispatch_progress_event("progress".to_owned(), 0, None);
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-readAsText
+    pub fn process_read(filereader: TrustedFileReader, gen_id: GenerationId) {
+        let fr = filereader.root();
+
+        macro_rules! return_on_abort(
+            () => (
+                if gen_id != fr.generation_id.get() {
+                    return
+                }
+            );
+        );
+        return_on_abort!();
+        // Step 6
+        fr.dispatch_progress_event("loadstart".to_owned(), 0, None);
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-readAsText
+    pub fn process_read_eof(filereader: TrustedFileReader, gen_id: GenerationId, data: Option<BlobBody>) {
+        let fr = filereader.root();
+
+        macro_rules! return_on_abort(
+            () => (
+                if gen_id != fr.generation_id.get() {
+                    return
+                }
+            );
+        );
+
+        return_on_abort!();
+        // Step 8.1
+        fr.change_ready_state(FileReaderReadyState::Done);
+        // Step 8.2
+        let output = match data {
+            Some(blob_body) => {
+                match blob_body.function {
+                    FileReaderFunction::ReadAsDataUrl =>
+                        FileReader::perform_readasdataurl(blob_body),
+                    FileReaderFunction::ReadAsText =>
+                        FileReader::perform_readastext(blob_body),
+                }
+            },
+            None => {
+                Ok(None)
+            }
+        };
+
+        //FIXME handle error if error is possible
+        *fr.result.borrow_mut() = output.unwrap();
+
+        // Step 8.3
+        fr.dispatch_progress_event("load".to_owned(), 0, None);
+        return_on_abort!();
+        // Step 8.4
+        if fr.ready_state.get() != FileReaderReadyState::Loading {
+            fr.dispatch_progress_event("loadend".to_owned(), 0, None);
+        }
+        return_on_abort!();
+        // Step 9
+        fr.terminate_ongoing_reading();
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-readAsText
+    fn perform_readastext(blob_body: BlobBody)
+        -> Result<Option<DOMString>, DOMErrorName> {
+
+        //https://w3c.github.io/FileAPI/#encoding-determination
+        // Steps 1 & 2 & 3
+        let mut encoding = match blob_body.label {
+            Some(e) => encoding_from_whatwg_label(&e),
+            None => None
+        };
+
+        // Step 4 & 5
+        encoding = match encoding {
+            Some(e) => Some(e),
+            None => {
+                let resultmime = blob_body.blobtype.parse::<Mime>().ok();
+                resultmime.and_then(|Mime(_, _, ref parameters)| {
+                    parameters.iter()
+                        .find(|&&(ref k, _)| &Attr::Charset == k)
+                        .and_then(|&(_, ref v)| encoding_from_whatwg_label(&v.to_string()))
+                })
+            }
+        };
+
+        // Step 6
+        let enc = match encoding {
+            Some(code) => code,
+            None => UTF_8 as EncodingRef
+        };
+
+        let convert = &blob_body.bytes[..];
+        // Step 7
+        let output = enc.decode(convert, DecoderTrap::Replace).unwrap();
+        Ok(Some(output))
+    }
+
+    //https://w3c.github.io/FileAPI/#dfn-readAsDataURL
+    fn perform_readasdataurl(blob_body: BlobBody)
+        -> Result<Option<DOMString>, DOMErrorName> {
+        let config = Config {
+            char_set: CharacterSet::UrlSafe,
+            newline: Newline::LF,
+            pad: true,
+            line_length: None
+        };
+        let base64 = blob_body.bytes.to_base64(config);
+
+        let output = if blob_body.blobtype.is_empty() {
+            format!("data:base64,{}", base64)
+        } else {
+            format!("data:{};base64,{}", blob_body.blobtype, base64)
+        };
+
+        Ok(Some(output))
+    }
+
+}
+
+impl<'a> FileReaderMethods for &'a FileReader {
+    event_handler!(loadstart, GetOnloadstart, SetOnloadstart);
+    event_handler!(progress, GetOnprogress, SetOnprogress);
+    event_handler!(load, GetOnload, SetOnload);
+    event_handler!(abort, GetOnabort, SetOnabort);
+    event_handler!(error, GetOnerror, SetOnerror);
+    event_handler!(loadend, GetOnloadend, SetOnloadend);
+
+    //TODO https://w3c.github.io/FileAPI/#dfn-readAsArrayBuffer
+    //https://w3c.github.io/FileAPI/#dfn-readAsDataURL
+    fn ReadAsDataURL(self, blob: &Blob) -> ErrorResult {
+        let global = self.global.root();
+        // Step 1
+        if self.ready_state.get() == FileReaderReadyState::Loading {
+            return Err(InvalidState);
+        }
+        //TODO STEP 2 if isClosed implemented in Blob
+
+        // Step 3
+        self.change_ready_state(FileReaderReadyState::Loading);
+
+        let bytes = blob.read_out_buffer();
+        let type_ = blob.read_out_type();
+
+        let load_data = ReadData::new(bytes, type_, None, FileReaderFunction::ReadAsDataUrl);
+
+        self.read(load_data, global.r())
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-readAsText
+    fn ReadAsText(self, blob: &Blob, label:Option<DOMString>) -> ErrorResult {
+        let global = self.global.root();
+        // Step 1
+        if self.ready_state.get() == FileReaderReadyState::Loading {
+            return Err(InvalidState);
+        }
+        //TODO STEP 2 if isClosed implemented in Blob
+
+        // Step 3
+        self.change_ready_state(FileReaderReadyState::Loading);
+
+        let bytes = blob.read_out_buffer();
+        let type_ = blob.read_out_type();
+
+        let load_data = ReadData::new(bytes, type_, label, FileReaderFunction::ReadAsText);
+
+        self.read(load_data, global.r())
+    }
+
+
+    // https://w3c.github.io/FileAPI/#dfn-abort
+    fn Abort(self) {
+        // Step 2
+        if self.ready_state.get() == FileReaderReadyState::Loading {
+            self.change_ready_state(FileReaderReadyState::Done);
+        }
+        // Steps 1 & 3
+        *self.result.borrow_mut() = None;
+
+        let global = self.global.root();
+        let exception = DOMException::new(global.r(), DOMErrorName::AbortError);
+        self.error.set(Some(JS::from_rooted(&exception)));
+
+        self.terminate_ongoing_reading();
+        // Steps 5 & 6
+        self.dispatch_progress_event("abort".to_owned(), 0, None);
+        self.dispatch_progress_event("loadend".to_owned(), 0, None);
+    }
+
+    fn GetError(self) -> Option<Root<DOMException>> {
+        self.error.get().map(|error| error.root())
+    }
+
+    fn GetResult(self) -> Option<DOMString> {
+        self.result.borrow().clone()
+    }
+
+    fn ReadyState(self) -> u16 {
+        self.ready_state.get() as u16
+    }
+}
+
+trait PrivateFileReaderHelpers {
+    fn dispatch_progress_event(self, type_: DOMString, loaded: u64, total: Option<u64>);
+    fn terminate_ongoing_reading(self);
+    fn read(self, read_data: ReadData,  global: GlobalRef) -> ErrorResult;
+    fn change_ready_state(self, state: FileReaderReadyState);
+}
+
+impl<'a> PrivateFileReaderHelpers for &'a FileReader {
+    fn dispatch_progress_event(self, type_: DOMString, loaded: u64, total: Option<u64>) {
+
+        let global = self.global.root();
+        let progressevent = ProgressEvent::new(global.r(),
+            type_, EventBubbles::DoesNotBubble, EventCancelable::NotCancelable,
+            total.is_some(), loaded, total.unwrap_or(0));
+
+        let target = EventTargetCast::from_ref(self);
+        let event = EventCast::from_ref(progressevent.r());
+        event.fire(target);
+    }
+
+    fn terminate_ongoing_reading(self) {
+        let GenerationId(prev_id) = self.generation_id.get();
+        self.generation_id.set(GenerationId(prev_id + 1));
+    }
+
+    fn read(self, read_data: ReadData, global: GlobalRef) -> ErrorResult {
+
+        let fr = Trusted::new(global.get_cx(), self, global.script_chan());
+        let gen_id = self.generation_id.get();
+
+        let script_chan = global.script_chan();
+
+        spawn_named("file reader async operation".to_owned(), move || {
+            perform_annotated_read_operation(gen_id, read_data, fr, script_chan)
+        });
+        Ok(())
+    }
+
+    fn change_ready_state(self, state: FileReaderReadyState) {
+        self.ready_state.set(state);
+    }
+}
+
+#[derive(Clone)]
+pub enum Process {
+    ProcessRead(TrustedFileReader, GenerationId),
+    ProcessReadData(TrustedFileReader, GenerationId, DOMString),
+    ProcessReadError(TrustedFileReader, GenerationId, DOMErrorName),
+    ProcessReadEOF(TrustedFileReader, GenerationId, Option<BlobBody>)
+}
+
+impl Process {
+    fn call(self, chan: &Box<ScriptChan + Send>) {
+        let task = box FileReaderEvent::new(self);
+        chan.send(ScriptMsg::RunnableMsg(task)).unwrap();
+    }
+
+    pub fn handle(process: Process) {
+        match process {
+            Process::ProcessRead(filereader, gen_id) => {
+                FileReader::process_read(filereader, gen_id);
+            },
+            Process::ProcessReadData(filereader, gen_id, _) => {
+                FileReader::process_read_data(filereader, gen_id);
+            },
+            Process::ProcessReadError(filereader, gen_id, error) => {
+                FileReader::process_read_error(filereader, gen_id, error);
+            },
+            Process::ProcessReadEOF(filereader, gen_id, blob_body) => {
+                FileReader::process_read_eof(filereader, gen_id, blob_body);
+            }
+        }
+    }
+}
+
+pub struct FileReaderEvent {
+    process: Process,
+}
+
+impl FileReaderEvent {
+    pub fn new(process: Process) -> FileReaderEvent {
+        FileReaderEvent {
+            process: process,
+        }
+    }
+
+}
+
+impl Runnable for FileReaderEvent {
+    fn handler(self: Box<FileReaderEvent>) {
+        let this = *self;
+        Process::handle(this.process);
+    }
+}
+
+//https://w3c.github.io/FileAPI/#task-read-operation
+fn perform_annotated_read_operation(gen_id: GenerationId, read_data: ReadData,
+    filereader: TrustedFileReader, script_chan: Box<ScriptChan + Send>) {
+    let chan = &script_chan;
+    // Step 4
+    Process::ProcessRead(filereader.clone(),
+        gen_id).call(chan);
+
+    Process::ProcessReadData(filereader.clone(),
+        gen_id, DOMString::new()).call(chan);
+
+    let output = match read_data.bytes.recv() {
+        Ok(bytes) => bytes,
+        Err(_) => {
+            Process::ProcessReadError(filereader,
+                gen_id, DOMErrorName::NotFoundError).call(chan);
+            return;
+        }
+    };
+
+    let blobtype = read_data.blobtype.clone();
+    let label = read_data.label.clone();
+
+    let blob_body = output.map(|bytes| {
+        BlobBody::new(bytes, blobtype, label, read_data.function)
+    });
+
+    Process::ProcessReadEOF(filereader, gen_id, blob_body).call(chan);
+}
diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index d3294cb184b..b6e9667e034 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -215,6 +215,7 @@ pub mod event;
 pub mod eventdispatcher;
 pub mod eventtarget;
 pub mod file;
+pub mod filereader;
 pub mod formdata;
 pub mod htmlanchorelement;
 pub mod htmlappletelement;
diff --git a/components/script/dom/webidls/FileReader.webidl b/components/script/dom/webidls/FileReader.webidl
new file mode 100644
index 00000000000..0c599348ed7
--- /dev/null
+++ b/components/script/dom/webidls/FileReader.webidl
@@ -0,0 +1,43 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+ // http://dev.w3.org/2006/webapi/FileAPI/#APIASynch
+
+//typedef (DOMString or ArrayBuffer) FileReaderResult;
+[Constructor, Exposed=Window/*,Worker*/]
+interface FileReader: EventTarget {
+
+  // async read methods
+  //[Throws]
+  //void readAsArrayBuffer(Blob blob);
+  [Throws]
+  void readAsText(Blob blob, optional DOMString label);
+  [Throws]
+  void readAsDataURL(Blob blob);
+
+  void abort();
+
+  // states
+  const unsigned short EMPTY = 0;
+  const unsigned short LOADING = 1;
+  const unsigned short DONE = 2;
+  readonly attribute unsigned short readyState;
+
+  // File or Blob data
+  //readonly attribute FileReaderResult? result;
+  readonly attribute DOMString? result;
+
+  readonly attribute DOMException? error;
+
+  // event handler attributes
+  attribute EventHandler onloadstart;
+  attribute EventHandler onprogress;
+  attribute EventHandler onload;
+  attribute EventHandler onabort;
+  attribute EventHandler onerror;
+  attribute EventHandler onloadend;
+
+};
diff --git a/tests/wpt/metadata/FileAPI/FileReader/Progress_event_bubbles_cancelable.html.ini b/tests/wpt/metadata/FileAPI/FileReader/Progress_event_bubbles_cancelable.html.ini
deleted file mode 100644
index 9e2248b63c8..00000000000
--- a/tests/wpt/metadata/FileAPI/FileReader/Progress_event_bubbles_cancelable.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[Progress_event_bubbles_cancelable.html]
-  type: testharness
-  [Check the values of bubbles and cancelable are false when the progress event is dispatched]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/blob/Blob-constructor.html.ini b/tests/wpt/metadata/FileAPI/blob/Blob-constructor.html.ini
index 24d11eb6ab6..d40989a91ef 100644
--- a/tests/wpt/metadata/FileAPI/blob/Blob-constructor.html.ini
+++ b/tests/wpt/metadata/FileAPI/blob/Blob-constructor.html.ini
@@ -9,9 +9,6 @@
   [A plain object with a length property should be treated as a sequence for the blobParts argument.]
     expected: FAIL
 
-  [A String object should be treated as a sequence for the blobParts argument.]
-    expected: FAIL
-
   [A Uint8Array object should be treated as a sequence for the blobParts argument.]
     expected: FAIL
 
@@ -48,9 +45,6 @@
   [Passing an element as the blobParts array should work.]
     expected: FAIL
 
-  [Passing an platform object that supports indexed properties as the blobParts array should work (window).]
-    expected: FAIL
-
   [Passing an platform object that supports indexed properties as the blobParts array should work (window with custom toString).]
     expected: FAIL
 
@@ -75,45 +69,3 @@
   [Array with mixed types]
     expected: FAIL
 
-  [Passing null (index 0) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing null (index 0) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Passing undefined (index 1) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing undefined (index 1) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Passing object "[object Object\]" (index 2) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing object "[object Object\]" (index 2) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Passing object "[object Object\]" (index 3) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing object "[object Object\]" (index 3) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Passing object "/regex/" (index 4) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing object "/regex/" (index 4) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Passing function "function () {}" (index 5) for options should use the defaults.]
-    expected: FAIL
-
-  [Passing function "function () {}" (index 5) for options should use the defaults (with newlines).]
-    expected: FAIL
-
-  [Newlines should not change when endings is 'transparent'.]
-    expected: FAIL
-
-  [Newlines should not change when endings is 'native'.]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/blob/Blob-slice.html.ini b/tests/wpt/metadata/FileAPI/blob/Blob-slice.html.ini
index d594d79442b..9e78feb7d4e 100644
--- a/tests/wpt/metadata/FileAPI/blob/Blob-slice.html.ini
+++ b/tests/wpt/metadata/FileAPI/blob/Blob-slice.html.ini
@@ -1,47 +1,8 @@
 [Blob-slice.html]
   type: testharness
-  [no-argument Blob slice]
-    expected: FAIL
-
-  [blob1.]
-    expected: FAIL
-
-  [blob2.]
-    expected: FAIL
-
-  [Slicing test: slice (0,0).]
-    expected: FAIL
-
-  [Slicing test: slice (0,1).]
-    expected: FAIL
-
-  [Slicing test: slice (0,2).]
-    expected: FAIL
-
-  [Slicing test: slice (0,3).]
-    expected: FAIL
-
-  [Slicing test: slice (0,4).]
-    expected: FAIL
-
-  [Slicing test: slice (0,5).]
-    expected: FAIL
-
-  [Slicing test: slice (0,6).]
-    expected: FAIL
-
-  [Slicing test: slice (0,7).]
-    expected: FAIL
-
-  [Slicing test: slice (0,8).]
-    expected: FAIL
-
   [Slicing test: slice (1,0).]
     expected: FAIL
 
-  [Slicing test: slice (1,1).]
-    expected: FAIL
-
   [Slicing test: slice (1,2).]
     expected: FAIL
 
@@ -60,9 +21,6 @@
   [Slicing test: slice (1,7).]
     expected: FAIL
 
-  [Slicing test: slice (2,0).]
-    expected: FAIL
-
   [Slicing test: slice (2,1).]
     expected: FAIL
 
@@ -87,9 +45,6 @@
   [Slicing test: slice (3,4).]
     expected: FAIL
 
-  [Slicing test: slice (3,5).]
-    expected: FAIL
-
   [Slicing test: slice (4,0).]
     expected: FAIL
 
@@ -150,9 +105,6 @@
   [Slicing test: slice (8,3).]
     expected: FAIL
 
-  [Invalid contentType ("ÿ")]
-    expected: FAIL
-
   [Invalid contentType ("te(xt/plain")]
     expected: FAIL
 
@@ -207,24 +159,3 @@
   [Invalid contentType ("te xt/plain")]
     expected: FAIL
 
-  [Invalid contentType ("te\\txt/plain")]
-    expected: FAIL
-
-  [Invalid contentType ("te\\0xt/plain")]
-    expected: FAIL
-
-  [Invalid contentType ("te\\x1fxt/plain")]
-    expected: FAIL
-
-  [Invalid contentType ("text/plain")]
-    expected: FAIL
-
-  [Valid contentType ("TEXT/PLAIN")]
-    expected: FAIL
-
-  [Valid contentType ("text/plain;charset = UTF-8")]
-    expected: FAIL
-
-  [Valid contentType ("text/plain;charset=UTF-8")]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/fileReader.html.ini b/tests/wpt/metadata/FileAPI/fileReader.html.ini
index 25d07b53ff4..30f5d00d2cf 100644
--- a/tests/wpt/metadata/FileAPI/fileReader.html.ini
+++ b/tests/wpt/metadata/FileAPI/fileReader.html.ini
@@ -1,11 +1,5 @@
 [fileReader.html]
   type: testharness
-  [FileReader interface object]
-    expected: FAIL
-
-  [no-argument FileReader constructor]
-    expected: FAIL
-
   [FileReader States -- abort]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/FileAPI/historical.html.ini b/tests/wpt/metadata/FileAPI/historical.html.ini
deleted file mode 100644
index 412e4bb8085..00000000000
--- a/tests/wpt/metadata/FileAPI/historical.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[historical.html]
-  type: testharness
-  [FileReader should not support readAsBinaryString]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/idlharness.html.ini b/tests/wpt/metadata/FileAPI/idlharness.html.ini
index 9ded67b6acb..176ebf0bebd 100644
--- a/tests/wpt/metadata/FileAPI/idlharness.html.ini
+++ b/tests/wpt/metadata/FileAPI/idlharness.html.ini
@@ -96,135 +96,6 @@
   [FileReader interface: existence and properties of interface object]
     expected: FAIL
 
-  [FileReader interface object length]
-    expected: FAIL
-
-  [FileReader interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [FileReader interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [FileReader interface: operation readAsArrayBuffer(Blob)]
-    expected: FAIL
-
-  [FileReader interface: operation readAsText(Blob,DOMString)]
-    expected: FAIL
-
-  [FileReader interface: operation readAsDataURL(Blob)]
-    expected: FAIL
-
-  [FileReader interface: operation abort()]
-    expected: FAIL
-
-  [FileReader interface: constant EMPTY on interface object]
-    expected: FAIL
-
-  [FileReader interface: constant EMPTY on interface prototype object]
-    expected: FAIL
-
-  [FileReader interface: constant LOADING on interface object]
-    expected: FAIL
-
-  [FileReader interface: constant LOADING on interface prototype object]
-    expected: FAIL
-
-  [FileReader interface: constant DONE on interface object]
-    expected: FAIL
-
-  [FileReader interface: constant DONE on interface prototype object]
-    expected: FAIL
-
-  [FileReader interface: attribute readyState]
-    expected: FAIL
-
-  [FileReader interface: attribute result]
-    expected: FAIL
-
-  [FileReader interface: attribute error]
-    expected: FAIL
-
-  [FileReader interface: attribute onloadstart]
-    expected: FAIL
-
-  [FileReader interface: attribute onprogress]
-    expected: FAIL
-
-  [FileReader interface: attribute onload]
-    expected: FAIL
-
-  [FileReader interface: attribute onabort]
-    expected: FAIL
-
-  [FileReader interface: attribute onerror]
-    expected: FAIL
-
-  [FileReader interface: attribute onloadend]
-    expected: FAIL
-
-  [FileReader must be primary interface of new FileReader()]
-    expected: FAIL
-
-  [Stringification of new FileReader()]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "readAsArrayBuffer" with the proper type (0)]
-    expected: FAIL
-
-  [FileReader interface: calling readAsArrayBuffer(Blob) on new FileReader() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "readAsText" with the proper type (1)]
-    expected: FAIL
-
-  [FileReader interface: calling readAsText(Blob,DOMString) on new FileReader() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "readAsDataURL" with the proper type (2)]
-    expected: FAIL
-
-  [FileReader interface: calling readAsDataURL(Blob) on new FileReader() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "abort" with the proper type (3)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "EMPTY" with the proper type (4)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "LOADING" with the proper type (5)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "DONE" with the proper type (6)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "readyState" with the proper type (7)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "result" with the proper type (8)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "error" with the proper type (9)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onloadstart" with the proper type (10)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onprogress" with the proper type (11)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onload" with the proper type (12)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onabort" with the proper type (13)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onerror" with the proper type (14)]
-    expected: FAIL
-
-  [FileReader interface: new FileReader() must inherit property "onloadend" with the proper type (15)]
-    expected: FAIL
-
   [FileReaderSync interface: existence and properties of interface object]
     expected: FAIL
 
@@ -246,3 +117,12 @@
   [FileReaderSync interface: operation readAsDataURL(Blob)]
     expected: FAIL
 
+  [FileReader interface: operation readAsArrayBuffer(Blob)]
+    expected: FAIL
+
+  [FileReader interface: new FileReader() must inherit property "readAsArrayBuffer" with the proper type (0)]
+    expected: FAIL
+
+  [FileReader interface: calling readAsArrayBuffer(Blob) on new FileReader() with too few arguments must throw TypeError]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-event-handler-attributes.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-event-handler-attributes.html.ini
deleted file mode 100644
index 0581ac711ac..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-event-handler-attributes.html.ini
+++ /dev/null
@@ -1,20 +0,0 @@
-[FileReader-event-handler-attributes.html]
-  type: testharness
-  [FileReader.onloadstart: initial value]
-    expected: FAIL
-
-  [FileReader.onprogress: initial value]
-    expected: FAIL
-
-  [FileReader.onload: initial value]
-    expected: FAIL
-
-  [FileReader.onabort: initial value]
-    expected: FAIL
-
-  [FileReader.onerror: initial value]
-    expected: FAIL
-
-  [FileReader.onloadend: initial value]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-multiple-reads.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-multiple-reads.html.ini
index 86d0638a769..6936324c1b0 100644
--- a/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-multiple-reads.html.ini
+++ b/tests/wpt/metadata/FileAPI/reading-data-section/FileReader-multiple-reads.html.ini
@@ -1,9 +1,6 @@
 [FileReader-multiple-reads.html]
   type: testharness
-  [test FileReader InvalidStateError exception for readAsText]
-    expected: FAIL
-
-  [test FileReader InvalidStateError exception for readAsDataURL]
+  [test FileReader no InvalidStateError exception in onloadstart event for readAsArrayBuffer]
     expected: FAIL
 
   [test FileReader InvalidStateError exception for readAsArrayBuffer]
@@ -12,6 +9,3 @@
   [test FileReader InvalidStateError exception in onloadstart event for readAsArrayBuffer]
     expected: FAIL
 
-  [test FileReader no InvalidStateError exception in onloadstart event for readAsArrayBuffer]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_abort.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_abort.html.ini
deleted file mode 100644
index c990f495548..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_abort.html.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[filereader_abort.html]
-  type: testharness
-  [Aborting before read]
-    expected: FAIL
-
-  [Aborting after read]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_error.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_error.html.ini
deleted file mode 100644
index a843aa01083..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_error.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[filereader_error.html]
-  type: testharness
-  [FileAPI Test: filereader_error]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsDataURL.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsDataURL.html.ini
deleted file mode 100644
index 6be64beab23..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsDataURL.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[filereader_readAsDataURL.html]
-  type: testharness
-  [FileAPI Test: filereader_readAsDataURL]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsText.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsText.html.ini
deleted file mode 100644
index 6039faa8814..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readAsText.html.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[filereader_readAsText.html]
-  type: testharness
-  [readAsText should correctly read UTF-8.]
-    expected: FAIL
-
-  [readAsText should correctly read UTF-16.]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readystate.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readystate.html.ini
deleted file mode 100644
index 00ba8d810dc..00000000000
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_readystate.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[filereader_readystate.html]
-  type: testharness
-  [FileAPI Test: filereader_readystate]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_result.html.ini b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_result.html.ini
index e24133d48d3..415751e1ead 100644
--- a/tests/wpt/metadata/FileAPI/reading-data-section/filereader_result.html.ini
+++ b/tests/wpt/metadata/FileAPI/reading-data-section/filereader_result.html.ini
@@ -1,11 +1,5 @@
 [filereader_result.html]
   type: testharness
-  [readAsText]
-    expected: FAIL
-
-  [readAsDataURL]
-    expected: FAIL
-
   [readAsArrayBuffer]
     expected: FAIL
 
diff --git a/tests/wpt/mozilla/tests/mozilla/interfaces.html b/tests/wpt/mozilla/tests/mozilla/interfaces.html
index f011f51668c..0f3cc380888 100644
--- a/tests/wpt/mozilla/tests/mozilla/interfaces.html
+++ b/tests/wpt/mozilla/tests/mozilla/interfaces.html
@@ -99,6 +99,7 @@ var interfaceNamesInGlobalScope = [
   "Event",
   "EventTarget",
   "File",
+  "FileReader",
   "FormData",
   "HTMLAnchorElement",
   "HTMLAppletElement",