Download 100 MB JPG image for testing
Preview the image and test your image-upload limit. The preset is 100 MiB (104,857,600 bytes); choose MB for decimal megabytes.
1 MB = 1,000,000 B · 1 MiB = 1,048,576 B
Advanced: test an upload limit
Enter the byte limit above, then choose one byte below, the exact limit or one byte above. Each choice uses the same base: 104,857,600 B. Generate and download each file to test your endpoint.
Where a 100 MB JPG comes up
- Testing what happens when a large image is committed to a repository.
- Checking upload limits on sites behind Cloudflare's Free or Pro plans.
- Setting a Google Form upload question to its 100 MB option and testing the boundary.
Limits it lands on
- GitHub blocks files larger than 100 MiB; this file sits exactly at that line, the classic edge case for push hooks.
- Cloudflare's Free and Pro plans cap request bodies at 100 MB, so the upload (decimal 100 MB is smaller than 100 MiB) is refused.
- Google Forms offers 100 MB as a per-file maximum for upload questions.
What is inside the file
About 1,600 comment segments, each up to 65,533 bytes, precede the image data.
Building it takes a few hundred milliseconds; the file is assembled in memory and handed to the browser as a download.
Questions
Why does Cloudflare reject a "100 MB" file?
Cloudflare's limit is 100 MB in decimal terms. 104,857,600 bytes is larger than 100,000,000.
Should large images go in Git?
Use Git LFS or object storage; files this size make clones slow even when they are accepted.
Reference and checks
Format reference: ITU-T T.81 (JPEG).
Preset target: 100 MiB (104,857,600 bytes). Verify the downloaded file's byte count.
Generate another size in this format · Technical notes for every format · Guide to testing file upload limits · Data processing and privacy
Related tools: Image Convert · Resize Image · Compress Image.
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