How to use Compress JPEG
- 1. Drop .jpg files. Batches welcome — each row shows its own savings.
- 2. Pick target or quality. A KB target for portals, or quality mode (80% is visually lossless for most photos).
- 3. Compare and download. Click a row for a side-by-side check, then download singles or a ZIP.
About this tool
JPEG quality above ~80% spends bytes on detail no screen shows. Recompressing at 75–85% typically halves camera-original files with no visible change — the sweet spot this tool searches for automatically when you set a target.
When not to recompress
Avoid compressing a JPEG that has already been compressed hard (blocky gradients, halos around edges) — artifacts compound. Start from the original export whenever you can.
Code examples
Typical result
photo.jpg · 3.8 MB → 97 KB (−97%) · 1512×2016 · quality 82%Common form limits (pixels and KB)
Passport photo 413×531 px ≤ 50 KB (3.5×4.5 cm at 300 DPI)
Exam form photo 200×230 px ≤ 50 KB
Exam signature 140×60 px ≤ 20 KB
PAN card photo 213×213 px ≤ 30 KB
US visa photo 600×600 px ≤ 240 KB (2×2 in at 300 DPI)cm to pixels at 300 DPI
pixels = cm × 118.11
3.5 cm → 413 px · 4.5 cm → 531 px · 2 in (5.08 cm) → 600 px