Check if files were made with Claude
Add a file to check for signs it was made with Claude.
Quick read
A browser tool that inspects a file’s metadata for a Claude Content Credential to indicate Claude may have made or processed it. Use it to quickly check supported image, audio, and video files without uploading them off your device.
- Supports many image, audio, and video formats up to 100 MB
- Runs entirely in your browser; files never leave your device
- Detects Claude via C2PA Content Credentials in file metadata
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A closer look at Check if files were made with Claude
What this checker does
This page lets you add a file to look for a Content Credential that indicates the file may have been made or processed with Claude. It only reads that attached credential in the file’s metadata; it does not read or store the file itself.
If a credential pointing to Claude is found, the tool will tell you. The credential is a cryptographically signed note using the C2PA standard, the same industry standard used by camera makers and photo-editing software.
How to use the file checker in your browser
Drag and drop or click to add a file. Supported formats include common image, video and audio types (JPG, PNG, GIF, WEBP, TIFF, HEIC, AVIF, SVG, DNG, JXL, MP4, MOV, AVI, WAV, MP3, M4A, FLAC) up to 100 MB.
The tool runs in your browser so your file never leaves your device. The checker only reads the attached credential in the file metadata and does not store or use your file for any other purpose.
Limits and what it does not do
The tool checks only for a Content Credential from Claude; it does not tell you who authored the underlying content and the credential itself carries no identifying information about the user.
The tool does not check plain text. Text detection is handled separately via a Detection API that is currently in private preview for eligible organizations as required under EU law.
Questions people ask about Check if files were made with Claude
- Will my uploaded file be sent to a server?
- No - the tool runs in your browser and the page says your file never leaves your device and is not stored or used for other purposes.
- What file types can I check?
- You can check many image, video and audio types listed on the page, including JPG, PNG, SVG, MP4, MOV, WAV and MP3, up to 100 MB.
- If the tool finds a credential, does that prove Claude wrote the content?
- Finding a Content Credential that points to Claude indicates the file may have been made or processed with Claude, but it does not identify the author of the underlying content.
Check if files were made with Claude was shared on NexURLs by NexURLs on November 6, 2026, in Tech & AI.
What we found on this site
- Built with
- Next.js
- Served through
- Cloudflare
- Home page answered in
- 219 ms
- Trackers
- None found
- Ads
- None found
- RSS feed
- No
- AI crawlers
- Lets them in
- Set up for phones
- Yes
- Real-visitor speed
- Needs work on Core Web Vitals
- Popularity
- Top 5,000 domain (Cloudflare)
- Google safety check
- No threats found
- Domain registered
- 1995
- Domain renews
- May 2028
Checked November 6, 2026 from the site’s own code and public records. See how the rest of the web compares in the NexURLs Internet Report.
Quick answers
What is Check if files were made with Claude?
Check if files were made with Claude (claude.com): A browser tool that inspects a file’s metadata for a Claude Content Credential to indicate Claude may have made or processed it. Use it to quickly check supported image, audio, and video files without uploading them off your device.
Who shared Check if files were made with Claude on NexURLs?
It was shared by NexURLs in November 2026. Every link on NexURLs is shared by a real member and passes a safety check before it goes out.
What are some sites like Check if files were made with Claude?
Members found these close to it: Found this site on Reddit. It does a great job visualizing AI concepts!, I built an open-source code graph for Claude Code would love your feedback, Marketur MCP WordPress Plugin for ChatGPT and Claude. The full list is on this page under Sites like Check if files were made with Claude.
Sites like Check if files were made with Claude
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- Marketur MCP WordPress Plugin for ChatGPT and Claudenexurls.com/@nexurls
A WordPress plugin (Marketur MCP) that connects ChatGPT or Claude to your site so AI can inspect and perform permitted...
- Free AI Certification Toolaicertified.free
- Dang.aidang.ai
Dang.ai is an AI tools directory listing over 5,000 tools across categories like copywriting, image generation, video...
- Document Q&A with GPT: web, .pdf, .docx, etc.klavier.ai
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