Why 500 KB?
500 KB is a sweet spot for email attachments, marketplace listings and CMS uploads: full-HD photos with no visible quality loss.
Steps
- The size is already set to 500 KB.
- Drop one or more photos (JPG, PNG, WebP).
- Download each photo or all of them as a ZIP — every file is guaranteed to be under 500 KB.
Quick answers
Is the result really under 500 KB?
Yes. 500 KB is treated as 500,000 bytes, which is under the limit whether a site counts 1,000 or 1,024 bytes per KB.
Does it work on my phone?
Yes — it runs in mobile browsers, and photos never leave your device.
How it works
- Best quality that fits — it searches for the highest JPEG quality under your limit instead of guessing, so your photo stays as sharp as possible.
- Shrinks only when needed — if a photo can't fit even at lower quality, it's scaled down step by step, keeping its proportions.
- Safe for every form — “100 KB” is treated as 100,000 bytes, so the file is under the limit whether the site counts 1,000 or 1,024 bytes per KB.
- Private — ID photos and documents never leave your device.
Common size limits
- Passport and visa photos on many portals: 50–240 KB.
- Job and exam applications: often 20–100 KB for photos and 10–50 KB for signatures.
- Email-friendly photos: 200–500 KB.
Frequently asked questions
Will my photo look bad at 20 KB?
It's scaled to a smaller size so it stays clear — a 20 KB photo is usually around 300–450 px wide, which is what most forms expect anyway.
The form also needs exact dimensions — what do I do?
Fill in max width and height (for example 200 × 230). The photo is fitted inside that box first, then compressed to the size limit.
Can I compress a PDF to 100 KB?
Use Compress PDF — it works best on scanned documents.