Try a reproducible metadata check

Reproduce synthetic metadata checks and review two licensed camera-file reports, with source attribution, hashes and clearly separated original and derivative results.

The color-grid experiments below use synthetic CC0 samples, not camera photographs; their names, times and GPS 0,0 are invented. The separate public-source camera-file reports use attributed photographs under their own licenses. Neither section guarantees device compatibility or anonymity.

Controlled sample compatibility matrix No photo handy? Try the public-sample walkthrough E-M10 & Sony A7 IV: licensed samples and reports

The source stores 120 × 80 pixels with Orientation 6. A decoder honoring that tag displays 80 × 120. Check the corner colors as well as the dimensions; do not apply a second rotation.

Download original test JPEG Download expected fields and SHA-256

CC0-1.0 · 2026-10-24 · exifr 7.1.3

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Controlled sample compatibility matrix

12 public synthetic cases with hashes and reference readings. Run them in your browser to check reading, display, re-encoding and selective JPEG cleanup separately.

These are generated grids and deliberately invalid test inputs, not camera photographs. Reference metadata readings were checked in Node; browser display and outputs are measured only when you run the checks. Matching a reference can include an expected failure. It is not camera certification, privacy clearance or a cross-browser guarantee.

exifr 7.1.3 · 2026-10-24 · CC0-1.0

Download reference manifest

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Scroll the table horizontally to view every column.

Case / download	Reference reading	This browser: reading	Image display	Re-encoding	Selective JPEG
JPEG: EXIF, GPS 0,0, Orientation 6baseline.jpg1635 B · JPEG SHA-256 `ddcde0a271cf267486d365354055c8f4b3974691bd99106bb1ddb8ae90091e3d`	The reader returned fields 20 returned fields The reader returned fields Artist, DateTimeOriginal, ExposureTime, FNumber, GPSLatitude, GPSLatitudeRef, GPSLongitude, GPSLongitudeRef, ISO, JFIFVersion, Make, Model, Orientation, ResolutionUnit, ThumbnailHeight, ThumbnailWidth, XResolution, YResolution, latitude, longitude	Not run in this browser	Not run in this browser	Not run in this browser	Not run in this browser
Progressive JPEG: invented serial and creditprogressive.jpg1136 B · JPEG SHA-256 `3f76dc61b4aabe067f28ec05d7c80b78d3c2ce7bf6fcfb635fdbf8de6993fb4d`	The reader returned fields 9 returned fields The reader returned fields Artist, DateTimeOriginal, JFIFVersion, ResolutionUnit, SerialNumber, ThumbnailHeight, ThumbnailWidth, XResolution, YResolution	Not run in this browser	Not run in this browser	Not run in this browser	Not run in this browser
PNG: technical dimensionsplain.png270 B · PNG SHA-256 `47751fc9981a0de7db4304a482f821721363143b12ea89c397914e4f45ff5e8a`	The reader returned fields 7 returned fields The reader returned fields BitDepth, ColorType, Compression, Filter, ImageHeight, ImageWidth, Interlace	Not run in this browser	Not run in this browser	Not run in this browser	Not scheduled
WebP: reader format limitationplain.webp180 B · WEBP SHA-256 `1c4026d6c15ab1305cce2bbb7011314d7fd331253e64eab1f8eeaa3644f312d7`	This metadata reader does not support the detected format	Not run in this browser	Not run in this browser	Not run in this browser	Not scheduled
JPEG: no returned metadata fieldsno-fields.jpg1267 B · JPEG SHA-256 `61aff5e7cd24329de50e36a3c5e6cededf47c7d5e3334eb93c6ac98e7de51a8e`	Parsing completed without returned fields 0 returned fields	Not run in this browser	Not run in this browser	Not run in this browser	Not scheduled
PNG bytes with a JPG filenamemislabeled.jpg270 B · PNG SHA-256 `47751fc9981a0de7db4304a482f821721363143b12ea89c397914e4f45ff5e8a`	The reader returned fields 7 returned fields The reader returned fields BitDepth, ColorType, Compression, Filter, ImageHeight, ImageWidth, Interlace	Not run in this browser	Not run in this browser	Not run in this browser	Not scheduled
Empty file (negative test)empty.jpg0 B · Not identified SHA-256 `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`	The selected file is empty	Not run in this browser	Not run in this browser	Not scheduled	Not scheduled
Incomplete JPEG (negative test)truncated.jpg180 B · JPEG SHA-256 `c893f8536a2e196b16b6a8661a46841358115fa4b5f9dbc7cb2ce72ccbcbe7b9`	The reader could not complete metadata parsing	Not run in this browser	Not run in this browser	Not scheduled	Not scheduled
Non-image bytes (negative test)unrecognized.bin57 B · Not identified SHA-256 `e382d7f18a0c62f5f3d53eff7b67ce7686cd6da6324527cb642308b6466ac3ac`	No supported image signature identified	Not run in this browser	Not run in this browser	Not scheduled	Not scheduled
PNG: EXIF author and capture datemetadata.png444 B · PNG SHA-256 `fa01cf3799a4c67b07a79a1470676add74d6839dae2ad17429133d58cc5279db`	The reader returned fields 11 returned fields The reader returned fields Artist, BitDepth, ColorType, Compression, DateTimeOriginal, Filter, ImageHeight, ImageWidth, Interlace, Make, Model	Not run in this browser	Not run in this browser	Not run in this browser	Not scheduled
TIFF: readable metadata versus browser previewmetadata.tiff29072 B · TIFF SHA-256 `09344eb682a79b7fb376f135121f75aade37446c125d90733238b20de6dac275`	The reader returned fields 14 returned fields The reader returned fields Artist, BitsPerSample, Compression, ImageHeight, ImageWidth, Make, Model, ModifyDate, PhotometricInterpretation, PlanarConfiguration, RowsPerStrip, SamplesPerPixel, StripByteCounts, StripOffsets	Not run in this browser	Not run in this browser	Not scheduled	Not scheduled
JPEG: EXIF GPS removal leaves XMP locationmixed-xmp.jpg2047 B · JPEG SHA-256 `e97307f7bd781b7329ba51daaa6a5c58894595b5141b87e4e158a84c3a79d980`	The reader returned fields 21 returned fields The reader returned fields Artist, DateTimeOriginal, ExposureTime, FNumber, GPSLatitude, GPSLatitudeRef, GPSLongitude, GPSLongitudeRef, ISO, JFIFVersion, Make, Model, Orientation, ResolutionUnit, ThumbnailHeight, ThumbnailWidth, XResolution, YResolution, creator, latitude, longitude	Not run in this browser	Not run in this browser	Not run in this browser	Not run in this browser

Checks run sequentially on public samples only; no private photo is needed or uploaded. JPEG/WebP re-encoding may change pixels and color; MIME is the actual browser output. Selective cleanup checks standard EXIF fields, not all metadata: the XMP example deliberately retains location fields. TIFF is read-only here, and browser display support can differ without implying file damage. WebP outputs can be generated while metadata verification remains unavailable. The downloaded report includes browser information; this checker does not upload it.

What happens when you run it

Fetch the public sample and verify its SHA-256 against the manifest.
Read the original with exifr, keeping the stored capture-time string.
Decode and draw to canvas, then encode JPEG at quality 0.92 using the same function as the remover.
Read the newly encoded file and show what this reader returns. Download it and verify independently.

Initializing the tool…

Wait for the controls to become available before choosing or dropping files. If this takes too long, check your connection or script blocker and reload.

This checks selected metadata fields using one reader. It does not inspect every possible segment or prove camera support. JPEG is re-encoded; pixels, file size and color rendering may change. Technical format or color-profile data can remain. Visible faces, signs and image dimensions are not hidden by metadata removal.

Use the tools on your own copy

Inspect metadata Remove metadata

Public-source camera files: two reproducible reports

Two licensed photographs record E-M10 and ILCE-7M4 in their metadata. We tested these exact files, not cameras in our possession. Editable metadata is not authentication or a whole-model compatibility guarantee.

Downloads are metadata-reduced, primary-image-only derivatives, NOT unchanged camera originals. GPS, serials, dates, MakerNotes, previews, XMP/IPTC, comments, unknown APP segments and trailing data were not copied. Selected technical EXIF and attribution were written; ICC and recognized Adobe decoder data were retained. Visible scene details remain.

Olympus OM-D E-M10

Checked on: 2026-10-28 · exifr 7.1.3 · 4608 × 3456 px

Photograph and credit: Em1019 5153714.jpg · tomasz przechlewski

Image license: CC BY 2.0

Source & license record Original creator/source

Source-file limits

The source returned 65 fields and readable GPS. Selective cleanup generated a copy, but the editor refused its complex/private structure. The derivative returned 28 fields; this does not establish editing support for original E-M10 files.

Source file: Node reference

Returned fields: 65
Location fields returned: Yes; values not republished
Editor structure preflight: Refused; no edit offered
GPS / identifier cleanup probe: Copy generated; coding bytes equal

Returned field names

ApplicationRecordVersion, Artist, Author, ColorSpace, ComponentsConfiguration, Contrast, Copyright, CreateDate, CustomRendered, DateTimeOriginal, DigitalZoomRatio, ExifImageHeight, ExifImageWidth, ExifVersion, ExposureCompensation, ExposureMode, ExposureProgram, ExposureTime, FNumber, FileSource, Flash, FlashpixVersion, FocalLength, GPSAltitude, GPSAltitudeRef, GPSDateStamp, GPSImgDirection, GPSImgDirectionRef, GPSLatitude, GPSLatitudeRef, GPSLongitude, GPSLongitudeRef, GPSMapDatum, GPSTimeStamp, GPSVersionID, GainControl, ISO, ImageDescription, InteropIndex, InteropVersion, LensInfo, LensModel, LightSource, Make, MaxApertureValue, MeteringMode, Model, ModifyDate, Orientation, PrintIM, ResolutionUnit, Saturation, SceneCaptureType, SensitivityType, Sharpness, Software, SpecialInstructions, WhiteBalance, XResolution, YCbCrPositioning, YResolution, latitude, longitude, makerNote, userComment

Published derivative: Node reference

Returned fields: 28
Location fields returned: Not returned; not proof of absence
Editor structure preflight: Preflight accepted only; not an editing test
GPS / identifier cleanup probe: No matching EXIF fields; no copy

Returned field names

Artist, ColorSpace, Copyright, ExifImageHeight, ExifImageWidth, ExifVersion, ExposureCompensation, ExposureMode, ExposureProgram, ExposureTime, FNumber, Flash, FlashpixVersion, FocalLength, ISO, LensModel, LightSource, Make, MaxApertureValue, MeteringMode, Model, Orientation, ResolutionUnit, SceneCaptureType, Software, WhiteBalance, XResolution, YResolution

Selected technical values returned from the source file

Field	Returned value
Camera Make`Make`	OLYMPUS IMAGING CORP.
Camera Model`Model`	E-M10
Software`Software`	Version 1.3
Orientation`Orientation`	Horizontal (normal)
Exposure Time`ExposureTime`	0.01
F-Number (Aperture)`FNumber`	3.5
ISO Sensitivity`ISO`	200
Focal Length`FocalLength`	17
Lens Model`LensModel`	LUMIX G VARIO 12-35/F2.8

Byte and independent pixel checks

Primary JPEG coding and all scan bytes are identical, excluding APP/COM and trailing data.

Pillow RGB pixels after EXIF orientation are identical. No ICC color conversion was performed; this is not an all-browser rendering guarantee.

Trailing bytes dropped from the derivative: 0 B

Source / derivative / primary coding SHA-256

ad9a5971aae8e936031ff3c362ecee16aab42332672646f8a5f19a168a651fbe
68f58a939647fe50a407cac8050a1ff2d5c9fcdd23e5ede84b16de5c5dad741f
f7921e28aaf2884544557749b9f369fb45bcd6d5fb4813cb6210e1a7727bca17

Download metadata-reduced JPEG · 3,760,768 B Try this sample in the viewer

Sony A7 IV (ILCE-7M4)

Checked on: 2026-10-28 · exifr 7.1.3 · 7008 × 4672 px

Photograph and credit: Micro Electricity Controller1.jpg · Santhosh Notagar99

Image license: CC BY 4.0

Source & license record Original creator/source

Source-file limits

The source returned 59 fields, but independent JPEG source inspection was unavailable. Cleanup and editing were refused. After the primary JPEG are 311,602 bytes; publication dropped them without interpretation. The derivative returned 29 fields. Its simpler structure does NOT establish original-file support or decode a shutter count.

Source file: Node reference

Returned fields: 59
Location fields returned: Not returned; not proof of absence
Editor structure preflight: Refused; no edit offered
GPS / identifier cleanup probe: Unsupported structure; no copy

Returned field names

BrightnessValue, ColorSpace, ComponentsConfiguration, CompositeImage, CompressedBitsPerPixel, Contrast, CreateDate, CustomRendered, DateTimeOriginal, DigitalZoomRatio, DocumentID, ExifImageHeight, ExifImageWidth, ExifVersion, ExposureCompensation, ExposureMode, ExposureProgram, ExposureTime, FNumber, FileSource, Flash, FlashpixVersion, FocalLength, FocalLengthIn35mmFormat, ISO, InstanceID, InteropIndex, InteropVersion, LensInfo, LensModel, LightSource, Make, MaxApertureValue, MeteringMode, Model, ModifyDate, OffsetTime, OffsetTimeDigitized, OffsetTimeOriginal, Orientation, PrintIM, Rating, RecommendedExposureIndex, ResolutionUnit, Saturation, SceneCaptureType, SceneType, SensitivityType, Sharpness, Software, SubSecTime, SubSecTimeDigitized, SubSecTimeOriginal, WhiteBalance, XResolution, YCbCrPositioning, YResolution, makerNote, userComment

Published derivative: Node reference

Returned fields: 29
Location fields returned: Not returned; not proof of absence
Editor structure preflight: Preflight accepted only; not an editing test
GPS / identifier cleanup probe: No matching EXIF fields; no copy

Returned field names

Artist, ColorSpace, Copyright, ExifImageHeight, ExifImageWidth, ExifVersion, ExposureCompensation, ExposureMode, ExposureProgram, ExposureTime, FNumber, Flash, FlashpixVersion, FocalLength, FocalLengthIn35mmFormat, ISO, LensModel, LightSource, Make, MaxApertureValue, MeteringMode, Model, Orientation, ResolutionUnit, SceneCaptureType, Software, WhiteBalance, XResolution, YResolution

Selected technical values returned from the source file

Field	Returned value
Camera Make`Make`	SONY
Camera Model`Model`	ILCE-7M4
Software`Software`	ILCE-7M4 v6.00
Orientation`Orientation`	Horizontal (normal)
Exposure Time`ExposureTime`	0.01
F-Number (Aperture)`FNumber`	4
ISO Sensitivity`ISO`	640
Focal Length`FocalLength`	70
Lens Model`LensModel`	FE 24-70mm F4 ZA OSS

Byte and independent pixel checks

Primary JPEG coding and all scan bytes are identical, excluding APP/COM and trailing data.

Pillow RGB pixels after EXIF orientation are identical. No ICC color conversion was performed; this is not an all-browser rendering guarantee.

Trailing bytes dropped from the derivative: 311,602 B

Source / derivative / primary coding SHA-256

03a409eb2b950b1fc308f5211635a037e637538910b6f5e8afd809616f608131
b34d5e13bbb4ace66018da99bd1a36fb73185955abc5805aa59bf92f3632a27d
40f4c0d7591966747c69fdfd209b7e6715245ea4b22ec2f1f04bde2a9d1e9139

Download metadata-reduced JPEG · 19,240,086 B Try this sample in the viewer

Recorded browser reads

Four actual JSON downloads from the local in-app browser were independently compared with the pinned-file reference. Browser version was not recorded. This is a completed observation, not a live test of your browser.

Checked on: 2026-10-28

Olympus OM-D E-M10 · Source file: 65 · Matches the reference read
Olympus OM-D E-M10 · Published derivative: 28 · Matches the reference read
Sony A7 IV (ILCE-7M4) · Source file: 59 · Matches the reference read
Sony A7 IV (ILCE-7M4) · Published derivative: 29 · Matches the reference read

Download browser observation record (JSON)

Reproduce and interpret the result

Review the source page, author and image license. Compare the exact SHA-256; a thumbnail is a different file.
Download the labelled derivative, select it in the viewer, and inspect Model, exposure, diagnostics and source coverage. Keep original and derivative results separate.
Use the original-file report for reading, editor refusal and cleanup outcomes. Rebuilt EXIF in a derivative does not prove original compatibility. MakerNote bytes and exposure time do not establish lifetime shutter count.

Download source-file reports (JSON)

Repository commands (Node and Python/Pillow; only the two pinned public sources are fetched):

node scripts/fetch-camera-sources.mjs
node scripts/generate-camera-reports.mjs 2026-10-28
node scripts/test-camera-reports.mjs

Reports publish selected technical values and field names, not source coordinates, serial values, dates or raw MakerNotes. Each photograph retains its own license and attribution; no creator endorsement is implied. No RAW, private-device or sharing-platform test is claimed.

How we check our guides

Guides distinguish documented behavior, synthetic tests and real-device tests. We do not treat sample values as camera measurements. Corrections include a revision date; report an error with the page URL and a non-sensitive example. Site maintenance is credited to ExifCheck, without implying independent security certification.

Report an issue

Implementation references: exifr / canvas.toBlob