3 MB JPG sample
A JPG file of exactly 3,145,728 bytes. It is a valid JPEG image file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 3 MB sample, test or dummy JPG file.
Download
sample-jpg-3mb.jpg
3 MB3,145,728 bytes
Download 3 MB JPGCreated in your browser in a few seconds, then checked against the SHA-256 checksum. No sign-up.
- Type
- image/jpeg
- SHA-256
143d46943b2a294cb5ecc2e9e0e68284e9eac302639723b2392a3ddce33bda3c- Delivery
- Created in your browser from static generator assets (how it works).
What is in this file
A 2781 × 2086 test card with fine grain, encoded as a baseline JPEG at quality 90. 1,818 bytes of JPEG comment (COM) segment bring the file to the exact size.
| Dimensions | 2,781 × 2,086 px |
|---|---|
| Encoding | Baseline DCT, Huffman |
| Chroma subsampling | 4:4:4 |
| Quality | 90 |
| Metadata | JFIF header and a comment, no EXIF |
| Progressive | No |
First bytes of the file
The first 64 bytes of sample-jpg-3mb.jpg as a hex dump: offset, bytes, then the same bytes as text. The JPG signature is FF D8 FF.
00000000 ff d8 ff e0 00 10 4a 46 49 46 00 01 01 01 00 48 |......JFIF.....H|
00000010 00 48 00 00 ff fe 07 18 53 61 6d 70 6c 65 54 65 |.H......SampleTe|
00000020 73 74 46 69 6c 65 73 20 73 61 6d 70 6c 65 20 4a |stFiles sample J|
00000030 50 45 47 2e 20 50 61 64 64 69 6e 67 3a 20 2e 2e |PEG. Padding: ..|Preview
Creates the file in your browser and shows it here. Nothing large is downloaded from our server.
Where 3 MB matters
A 3,145,728-byte file, 3 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.
Use this file for
- Finding out whether a 1 MB default has been raised
- Checking maximum file-size and dimension rules
- Measuring image optimisation
Testing notes for JPG
- A small file can decode to a huge bitmap. Validate pixel dimensions as well as bytes, or a 5 MB upload can demand hundreds of megabytes of memory.
- Re-saving a JPEG loses quality each time, so pipelines should resize from the original.
Technical details
| File name | sample-jpg-3mb.jpg |
|---|---|
| Format | JPG (JPEG image) |
| Extension | .jpg |
| MIME type | image/jpeg |
| Size | 3,145,728 bytes (3 MB) |
| Kind | Binary |
| Signature | FF D8 FF |
| SHA-256 | 143d46943b2a294cb5ecc2e9e0e68284e9eac302639723b2392a3ddce33bda3c |
| Created | 2026-10-23 |
| Validation | See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility. |
| Preview | Available on this page |
| Source | Generated in your browser by this site's generator; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Images |
Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Verify your copy
This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.
sha256sum sample-jpg-3mb.jpg # Linux
shasum -a 256 sample-jpg-3mb.jpg # macOSOn Windows, run Get-FileHash sample-jpg-3mb.jpg -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.
Related files
Questions about this file
- Is this file exactly 3 MB?
- Yes. It is 3,145,728 bytes, which is 3 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 3 MB JPG file?
- A 2781 × 2086 test card with fine grain, encoded as a baseline JPEG at quality 90. 1,818 bytes of JPEG comment (COM) segment bring the file to the exact size.
- Why do larger samples have larger pixel dimensions?
- The quality setting is fixed at 90, so the only way to reach a bigger file is a bigger picture. The dimensions are listed on each download page.