Does this keep all of my original EXIF metadata?

No. The editor replaces the existing EXIF block with three documented text fields, so GPS, camera settings, dates, thumbnails, and unknown EXIF fields are removed. Keep the original file if you still need them.

Are the image pixels recompressed when I edit EXIF?

No. The compressed image scan bytes are copied, and only the metadata headers change. Quality, dimensions, and file extension stay the same.

Why does the editor accept printable ASCII text only?

The TIFF ASCII writer uses a deterministic byte representation and refuses text it cannot represent safely. Names with accents, emoji, control characters, or long legal notices should be saved in another workflow.

Does an EXIF copyright notice protect my image everywhere?

No. The field is a notice, not a licence, watermark, or legal enforcement tool. Platforms can strip or rewrite metadata during upload, so check the exported JPEG in the destination application and keep a separate rights record if attribution matters legally.

Can I edit GPS coordinates or capture dates with this tool?

No. The editor only writes Description, Artist, and Copyright. Existing GPS, dates, camera settings, and unknown EXIF fields are removed by the replacement block, so a different archival workflow is required if those values must be preserved.

Which file types and sizes are supported?

One JPEG at a time, up to 25 MiB. PNG, WebP, HEIC, TIFF, RAW, phone live photos, and images embedded in documents are outside the scope of this tool.

EXIF Editor Online: Write JPEG Credit Fields in Your Browser

An EXIF editor online is a browser page that reads and rewrites the metadata block inside a JPEG photo without sending the file to a remote server. A focused version of that idea is the EXIF Editor, which accepts one JPEG up to 25 MiB, displays any text already present in three specific EXIF slots, and writes a new standard APP1 EXIF block containing only Description (tag 0x010E), Artist (tag 0x013B), and Copyright (tag 0x8298). The compressed image pixels are copied, not decoded and re-encoded, so the file's quality and dimensions do not change. All work happens in the current tab, and the page validates the JPEG marker stream before it produces a download. This is deliberately a narrow tool: it is for adding or correcting credit lines on a JPEG that you already control, not for editing every camera setting, GPS coordinate, or proprietary vendor extension that a photo can carry.

What an Online EXIF Editor Actually Does

EXIF stands for Exchangeable Image File Format, a metadata specification maintained by CIPA and embedded in the APP1 segment of most JPEG files produced by cameras and phones. That segment can hold dozens of fields, from focal length and shutter speed to GPS latitude, embedded thumbnails, and vendor-specific MakerNote blocks. A general EXIF editor online is meant to expose those fields, let a user change the values, and write them back into the JPEG header in a way that standard readers will accept.

The phrase "online," however, covers two very different designs. A server-side editor uploads the file, processes it on a remote machine, and returns a new image. A browser-side editor reads the file with a JavaScript library such as exifr, builds a fresh metadata block, and delivers the result as a local download. The privacy and reproducibility profile of those two paths is not the same, which is why a tool's claim to be "online" is worth checking against its actual processing location.

Three Fields This Editor Handles

The EXIF Editor limits itself to three IFD0 text fields defined by the EXIF standard, which the CIPA Exif Version 3.1 specification describes as plain ASCII strings.

Field	EXIF Tag	Typical Use
Description	0x010E (ImageDescription)	A short factual note about the image, such as subject, occasion, or location in plain words.
Artist	0x013B	The name of the creator or photographer receiving credit for the image.
Copyright	0x8298	A copyright notice, often a year followed by the rights holder's name.

Each field accepts printable ASCII text up to 120 bytes. Names with accents, non-Latin scripts, emoji, control characters, or a long legal notice are deliberately rejected so the writer does not silently mis-encode them as UTF-8 or another system that a downstream reader might misinterpret. Leading and trailing spaces are trimmed so accidental padding does not end up in the metadata record.

How to Edit EXIF Online With This Browser Tool

Duplicate the original JPEG so you keep an untouched copy. This step matters because the editor replaces the existing EXIF block rather than merging into it.
Open the EXIF Editor page and choose one JPEG up to 25 MiB from your computer. The page reads the three supported fields locally and shows any values already present, leaving non-JPEG files, files renamed with a .jpg extension, and truncated marker segments as errors.
Fill in the Description, Artist, Copyright notice, or any combination of the three. At least one field must contain text before an output can be created. Use plain ASCII characters and keep each value under 120 bytes.
Select Write EXIF text. The page validates the JPEG marker stream, removes earlier EXIF APP1 segments, retains the JFIF APP0 segment if present, inserts one new EXIF APP1 segment with little-endian TIFF byte order, and copies the compressed image scan bytes unchanged.
Download the new JPEG. The file is a real JPEG with a standard APP1 EXIF block, ready to be saved alongside the original.
Reopen the downloaded file in a metadata viewer such as the EXIF Viewer to confirm that the displayed Description, Artist, and Copyright match what you typed. If the source held GPS, camera settings, or capture dates you still need, restore the original file and use an archival workflow instead.

Why Local Processing Matters for EXIF Edits

EXIF data often contains information people do not realise their photos carry: GPS coordinates of the location where a picture was taken, the serial number of the camera body, the exact moment a shutter fired, and sometimes an embedded thumbnail that shows a different frame than the main image. Sending a photo to a remote server to edit three credit fields means exposing that payload to the server, to its logs, and to whatever retention policy it operates under. A browser-side editor reads the file from the user's disk, parses the relevant bytes with exifr, builds a replacement block, and hands the resulting Blob back through the browser's download mechanism. The selected file is never uploaded, never stored in an account, and never enters a remote processing queue.

That design also makes the operation reproducible: the same input text and the same source JPEG produce the same output bytes, which is useful when an organisation needs a documented workflow for embedding credit metadata in many files.

What This Tool Does to Other EXIF Fields

JPEG metadata can contain GPS coordinates, camera serial details, MakerNote records, embedded thumbnails, editing history, copyright fields, and application-specific blocks. Safely editing every vendor extension would require a format-aware merge policy for each kind of record. The EXIF Editor takes the transparent route: it creates a new EXIF block containing only the three documented IFD0 text fields and removes earlier EXIF APP1 segments to avoid two conflicting sets of fields. GPS coordinates, camera settings, capture dates, embedded thumbnails, and unknown EXIF fields are removed. Existing non-EXIF JPEG data and the compressed image pixels are not re-encoded or resized. Keep the original whenever those details matter.

Component of the source JPEG	Outcome after editing
JFIF APP0 segment, when present	Retained
Earlier EXIF APP1 segments	Replaced with one new EXIF APP1 segment
Description, Artist, Copyright text	Replaced with the values you typed (if any)
Other EXIF fields (GPS, camera, MakerNote, dates, thumbnails)	Removed
Compressed image scan bytes	Copied without re-encoding
File extension and JPEG container	Unchanged

The implementation uses a little-endian TIFF IFD0 with standard ASCII tags, matching the byte representation expected by readers that follow the CIPA specification referenced at CIPA — Exif Version 3.1 standard.

Limits and Pitfalls to Plan Around

The editor only accepts a single JPEG at a time and caps the file at 25 MiB. PNG, WebP, HEIC, TIFF, RAW formats, phone live photos, and images embedded inside documents fall outside its scope. There is no batch mode, no GPS editor, no date editor, no orientation editor, no image conversion, no OCR, and no external lookup. Printable ASCII is a hard limit, so an artist name with diacritics or a rights notice with non-Latin characters should be stored in another workflow rather than forced through the form. Malformed headers, including markers that point outside the file or claim an unrealistic length, are rejected before a download is produced.

An EXIF Copyright field is also not a substitute for licence registration. The field is a notice, not an enforcement mechanism: platforms can strip or rewrite metadata during upload, and the field cannot prove authorship, prevent copying, or guarantee that a destination application displays it. Check the exported JPEG in the destination application and keep a separate rights record if attribution or licensing has legal importance. This tool does not create a Creative Commons licence, register a work, add a visible watermark, or provide legal advice.

For a dependable workflow, the practical sequence is: duplicate the original file, select that copy in the EXIF Editor, fill only the credit fields you can verify, download the result, and reopen it in a metadata viewer. If the verification does not match the typed text, the input was probably not a valid JPEG or the page rejected the character set, and the source file should be restored from the duplicate.