The internet’s favorite upload limit
Job portals, visa and immigration systems, university applications, marketplace listings, forum attachments — 100 KB is the default cap a huge share of upload forms enforce. Meanwhile your phone produces 3–8 MB photos, a 30–80× mismatch.
100 KB is actually generous: a 1000-pixel-wide JPG at quality ~75 fits comfortably and looks sharp on any screen. The tool above finds that combination automatically and verifies the result, so you never bounce off a form's error message twice.
What quality to expect at 100 KB
| Source image | Typical outcome under 100 KB |
|---|---|
| Phone photo (3–8 MB HEIC/JPG) | ~1000–1300 px wide, quality 70–85 — sharp on screen |
| Passport/ID photo | Full required dimensions at high quality |
| Scanned document page | Readable at ~1000 px; text slightly soft |
| Already-small web image | Often untouched quality — just re-encoded efficiently |