10 KB PNG sample file
A PNG file of exactly 10,240 bytes. It is a valid Portable Network Graphics file, generated for this site and checked with an independent parser.
Download
sample-png-10kb.png
10 KB10,240 bytes
Download 10 KB PNG
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- Type
- image/png
- SHA-256
da6b493445e9e4b85d7a39bab53ab7a4f4658bee7ab09f6fc76670b9de69939e- Direct URL
https://sampletestfiles.com/downloads/png/sample-png-10kb.png
What is in this file
A 67 × 50 test card. The pixel data sits in a deflate stream made of stored blocks, so the size is set by the pixel count. 72 bytes of tEXt comment chunk bring the file to the exact size.
| Dimensions | 67 × 50 px |
|---|---|
| Colour type | Truecolour RGB, 8 bits per channel |
| Transparency | No |
| Compression | Deflate stream of stored blocks |
| Interlaced | No |
First bytes of the file
The first 64 bytes of sample-png-10kb.png as a hex dump: offset, bytes, then the same bytes as text. The PNG signature is 89 50 4E 47 0D 0A 1A 0A.
00000000 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 |.PNG........IHDR|
00000010 00 00 00 43 00 00 00 32 08 02 00 00 00 88 d6 f1 |...C...2........|
00000020 40 00 00 00 3c 74 45 58 74 43 6f 6d 6d 65 6e 74 |@...<tEXtComment|
00000030 00 53 61 6d 70 6c 65 54 65 73 74 46 69 6c 65 73 |.SampleTestFiles|Preview
Displays the file in your browser.
Where 10 KB matters
A 10,240-byte file that still arrives in the first round trip of a new connection. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| TCP initial congestion window | About 14.6 KB (10 segments) | A 10 KB response fits in the first flight of packets; the 25 KB sample does not. |
| nginx and Apache request headers | 8 KB per header line by default | Data this large must go in the request body. |
| webpack asset modules | 8 KB by default | Assets over the threshold are emitted as files instead of data URIs. |
Use this file for
- Checking thumbnail and icon handling
- Testing image optimisation and conversion
- Verifying dimension limits
Testing notes for PNG
- Every chunk carries a CRC, so a strict decoder rejects a file that was altered in transit.
- PNG compresses flat colour extremely well, so a tiny file can expand to a very large bitmap. Check dimensions before decoding.
Technical details
| File name | sample-png-10kb.png |
|---|---|
| Format | PNG (Portable Network Graphics) |
| Extension | .png |
| MIME type | image/png |
| Size | 10,240 bytes (10 KB) |
| Kind | Binary |
| Signature | 89 50 4E 47 0D 0A 1A 0A |
| SHA-256 | da6b493445e9e4b85d7a39bab53ab7a4f4658bee7ab09f6fc76670b9de69939e |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Images |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-png-10kb.png 'https://sampletestfiles.com/downloads/png/sample-png-10kb.png'
sha256sum sample-png-10kb.png # Linux
shasum -a 256 sample-png-10kb.png # macOSOn Windows, run Get-FileHash sample-png-10kb.png -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 10 KB?
- Yes. It is 10,240 bytes, which is 10 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 10 KB PNG file?
- A 67 × 50 test card. The pixel data sits in a deflate stream made of stored blocks, so the size is set by the pixel count. 72 bytes of tEXt comment chunk bring the file to the exact size.
- Why are the sized PNG samples stored without compression?
- It makes the size exact and predictable: the pixel data is written in uncompressed deflate blocks, so byte count follows pixel count. The files are fully valid PNGs. For a normally compressed PNG, use the 1920 × 1080 test card.