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Compress an image to 240 KB
To get an image under 240 KB, PixelFit aims at 240,000 bytes or less, so forms counting 1 KB as 1000 or 1024 bytes both accept it. Estimated from our measured encodes, that is about 1,106 × 829 pixels for a 4:3 photo at quality 75, or 1,498 × 1,870 for a portrait.
Under 240 KB
JPG · under 240 KB (at most 240,000 bytes) · original pixel size · white background
PixelFit aims at 240,000 bytes or less, so the file passes whether the form counts 1 KB as 1,000 or 1,024 bytes.
Fit, background and padding white background
Saving presets is part of Pro.
The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.
The batch kit (one ZIP for up to 500 photos, several photos merged into one PDF) is part of Pro.
What 240 KB means in bytes
240 KB is 245,760 bytes when 1 KB = 1024 bytes (240 × 1024) and 240,000 bytes when a server counts 1 KB = 1000 bytes. The 5,760-byte gap matters only near the limit. PixelFit aims at 240,000 bytes or less and prints the exact byte count, so you can compare it with the form.
240 KB is 0.23 MB; 42 such files fit in 10 MB. Uncompressed, the 1,106 × 829 photo that fits here would need 2.62 MB of raw pixels, so JPEG at quality 75 packs it about 11 to 1.
Largest pixel size that fits 240 KB
The biggest image of each kind, in its own aspect ratio, that stays at or below 240,000 bytes.
| Image | JPG q60 | JPG q75 | JPG q90 | WebP q75 |
|---|---|---|---|---|
| Head-and-shoulders portrait | 1,823 × 2,276 | 1,498 × 1,870 | 1,055 × 1,317 | 2,303 × 2,876 |
| Outdoor landscape (12 MP phone photo) | 1,271 × 953 | 1,106 × 829 | 875 × 656 | 1,175 × 881 |
| Scanned typed document page | 1,529 × 1,921 | 1,256 × 1,578 | 892 × 1,120 | 1,884 × 2,367 |
| Handwritten letter with signature | 2,668 × 2,193 | 2,141 × 1,760 | 1,462 × 1,201 | 3,406 × 2,800* |
| Flat-colour graphic (flag) | 5,738 × 4,016* | 5,208 × 3,645* | 4,126 × 2,888* | over 9,561 × 6,692 |
A 12 MP phone photo at 240 KB
Our 12 MP landscape sample (4032 × 3024) is about 4.15 MB at quality 90, 18 times the 240 KB budget; even quality 30 leaves 1.26 MB (extrapolated from encodes up to 3,000 px). So the pixels must go down too.
At about quality 75 it fits 240 KB near 1,106 × 829 (0.92 MP, 8 % of the original pixels). Quality 60 allows 1,271 × 953; quality 90 needs 875 × 656.
JPEG quality for fixed pixel sizes under 240 KB
When a form fixes the pixels, only quality can move. Highest quality (of 100) that keeps each size at or under 240,000 bytes:
| Pixel size | Measured on | JPG | WebP |
|---|---|---|---|
| 800 × 600 (4:3 web photo) | landscape photo | quality 93 (234 KB) | quality 94 (228 KB) |
| 1080 × 1080 (square social post) | landscape photo | quality 62 (234 KB) | quality 62 (232 KB) |
| 1200 × 1600 (3:4 portrait upload) | portrait photo | quality 84 (231 KB) | quality 91 (231 KB) |
| 1920 × 1080 (Full HD frame) | landscape photo | no: fewer pixels needed | no: fewer pixels needed |
| 1240 × 1754 (A4 page at 150 DPI) | scanned typed page | quality 71 (231 KB) | quality 86 (221 KB) |
| 2480 × 3508 (A4 page at 300 DPI) | scanned typed page | no: fewer pixels needed | quality 41 (232 KB) |
Measured JPEG files either side of 240 KB
Real encodes from our test set at quality 75: the largest file that stays under 240,000 bytes and the smallest that goes over.
| Image | Largest under 240 KB | Smallest over 240 KB |
|---|---|---|
| Head-and-shoulders portrait | 1281 × 1600: 183,340 B | 1601 × 2000: 268,967 B |
| Outdoor landscape (12 MP phone photo) | 1000 × 750: 193,683 B | 1200 × 900: 284,926 B |
| Scanned typed document page | 955 × 1200: 157,822 B | 1273 × 1600: 244,883 B |
| Handwritten letter with signature | 2000 × 1644: 210,628 B | 2400 × 1973: 298,321 B |
| Flat-colour graphic (flag) | 3000 × 2100: 115,604 B | none: every measured size fits |
JPG, WebP or PNG at 240 KB
At quality 75, WebP holds 1,175 × 881 of the landscape photo in 240 KB, JPG 1,106 × 829: 13 % more pixels. Portrait gain: 136 %. Typed page gain: 125 %. A moderate gain for the landscape photo at 240 KB, a large one for portraits and typed pages: where WebP is accepted, use it for those. Many portals accept only JPG/JPEG, so this page starts in JPG.
A full-colour PNG is lossless, so its size follows the content. In 240 KB it holds a flat graphic of 4,268 × 2,987 (extrapolated) pixels but a photo of only 402 × 301, against 1,106 × 829 as a quality-75 JPG. Reducing a PNG to a palette of up to 256 colours (PixelFit does this when a PNG must shrink) helps graphics far more than photos.
Which uploads fit comfortably in 240 KB
2 of the 6 sizes above keep quality 75 or better under 240 KB (800 × 600, 1200 × 1600); 2 miss even at quality 30 (1920 × 1080, 2480 × 3508). At 1,106 × 829, quality 90 costs 61 % more bytes than quality 75.
A typed page reaches 1,529 × 1,921 at quality 60 in 240 KB, about 164 DPI if it is an A4 sheet.
How to compress an image to 240 KB
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Open the tool above
It is preset to 240 KB (240,000 bytes or less), JPG output.
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Add your image
Drop, paste or pick it; a PNG, WebP or (where the browser opens it) HEIC file becomes a JPG under 240 KB.
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Pixel size: only if asked
On auto, a typical photo stops near 1,106 × 829 at about quality 75.
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Download and check
name-240kb.jpg comes with its byte count, pixels and quality.
Forms that ask for 240 KB
Upload specs in our dataset with exactly 240 KB. Verify with the official notice before you submit.
240 KB limits
Sources
- Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026.
- Sample images, Wikimedia Commons, checked 31 October 2026: landscape (CC0 1.0) commons.wikimedia.org/w/index.php?curid=154070378; portrait commons.wikimedia.org/w/index.php?curid=23956389; typed page commons.wikimedia.org/w/index.php?curid=194775753; handwritten letter commons.wikimedia.org/w/index.php?curid=90423615; flag commons.wikimedia.org/w/index.php?curid=361734 (public domain).
- Binary prefixes, NIST, checked 31 October 2026: physics.nist.gov/cuu/Units/binary.html
Frequently asked questions
How do I compress an image to 240 KB?
Drop it into the tool here, preset to 240 KB. It searches JPEG quality (at most 8 encodes per pixel size), then scales pixels down if needed, until the file is 240,000 bytes or less. A 4:3 photo typically lands near 1,106 × 829 at about quality 75.
How do I compress an image to less than 240 KB without losing quality?
Give up pixels before quality: at quality 75, 240 KB holds 1,106 × 829 of a photo and 1,498 × 1,870 of a portrait; quality 90 at 1,106 × 829 costs 61 % more bytes.
Is 240 KB 240,000 or 245,760 bytes?
Both readings exist: 245,760 bytes (1 KB = 1024) or 240,000 bytes (1 KB = 1000). 240,000 bytes or less passes both.
Can I compress a PNG to 240 KB?
Yes, but a full-colour PNG photo stays big: about 402 × 301 pixels in 240 KB, versus 4,268 × 2,987 (extrapolated) for a flat graphic. As a JPG the photo reaches 1,106 × 829.
What pixel size fits 240 KB?
At quality 75: a photo 1,106 × 829, a portrait 1,498 × 1,870, a typed page 1,256 × 1,578.
Related
Nearby file sizes
- Compress to 200 KB photo ≈ 1,015 × 761
- Compress to 150 KB photo ≈ 879 × 659
- Compress to 120 KB photo ≈ 786 × 589
- Compress to 250 KB photo ≈ 1,128 × 846
- Compress to 300 KB photo ≈ 1,232 × 924
- Compress to 350 KB photo ≈ 1,334 × 1,000
More ways to hit 240 KB
- Image resizer with KB target Any size, pixels and format
Pixel sizes that fit 240 KB
- 900×900 square about 205 KB as a quality-75 JPG
- 1200×675 landscape about 205 KB as a quality-75 JPG
- 1024×768 (XGA) about 199 KB as a quality-75 JPG
- 768×1024 portrait about 199 KB as a quality-75 JPG