Compress Image for 3x4 document photos — 100% in Your Browser
3x4 document photos often rejects oversized images. zipo.pics shrinks your file to fit while keeping it sharp, and shows the exact size first.
Official 3x4 portrait photos across Brazil and Latin America are required for national identity cards (RG), digital driver licenses (CNH), passport renewals, and public job examinations (Concursos Públicos). Portals like gov.br and Cebraspe typically mandate a file size below 100–200 KB with exact 354×472 pixel proportions. High-resolution smartphone shots fail these file ceilings. zipo.pics shrinks your 3x4 photo locally using in-browser WebAssembly, meeting strict portal limits without uploading personal ID photos to third-party servers.
Drag images here, or click to choose
Batch upload, auto-compress with current settings; all computation runs in your local browser
Never uploaded to a server · images never leave the browser
- Target size
- Under 100 – 200 KB
- Recommended
- 354 × 472 px (30 × 40 mm)
Targets are general guidance; always check the official limit for your case.
Meeting the 100–200 KB limit for official registration portals
Government portals and examination boards automatically reject uploads that exceed file quotas (often capped at 200 KB). Photos taken with modern cameras easily exceed 4 MB. zipo.pics compresses the image iteratively on your local CPU, displaying the exact final file size before downloading.
Proper 3x4 aspect ratio and facial clarity
A standard 3x4 photo represents a 30×40 mm ratio (or 354×472 px at 300 DPI). Compressing with aggressive lossy tools can smudge key facial lines and result in official document rejections. zipo.pics balances file reduction with razor-sharp facial details.
Zero cloud upload for sensitive citizen identification documents
ID and driver license photos are legal biometric documents. Traditional compression sites upload images to cloud servers where files may be stored. zipo.pics operates entirely within your browser tab: no files are transferred across the network, ensuring complete confidentiality.
FAQ
What size should I compress for 3x4 document photos?
Aim for the target in the table below and keep the file under it — zipo.pics shows the exact output size before you download.
Will it stay sharp?
zipo.pics uses near-lossless settings by default; compare original vs compressed and stop when it looks acceptable.
Is it private?
Yes — everything runs locally in your browser; nothing is uploaded.
Is my image uploaded to a server?
No. Every conversion runs inside your browser, on your own device, using Rust compiled to WebAssembly. The image bytes are never sent to zipo.pics or to any third party — which is also why the page keeps working offline after it has loaded once.
Is zipo.pics free? Is there a limit on how many images I can compress?
Standard compression is free and unlimited: no account, no image-count cap. Credits are only needed for optional extras such as AI enhancement, noise removal, watermark removal and HD export.
Which image formats can it compress?
PNG, JPG/JPEG, WebP, AVIF and GIF, and you can convert between them. Choose PNG to shrink a photo while keeping every pixel, WebP or AVIF for the smallest file at a given quality, and JPG when you need universal compatibility.
Will compressing my image reduce its quality?
You decide. Each result is shown next to the original before you download, so you can lower or raise the strength per image. Lossless mode re-encodes the same format without discarding data; stronger settings trade a little fine detail for a much smaller file.