Question 1

How does image optimization work?

Accepted Answer

OneClick.pics uses smart lossy and lossless algorithms in your browser to reduce file size while keeping visible quality. For JPG, WEBP and AVIF we iteratively lower quality until the file fits your target size (KB).

Question 2

How do passport photo presets work?

Accepted Answer

Each country's preset embeds official dimensions (in mm and px), head-position ratios and required background. Selecting a country auto-fills every setting so your photo meets the standard.

Question 3

Is it completely free?

Accepted Answer

Yes — 100% free forever. OneClick.pics is entirely ad-supported. No premium plans, no pro upgrades, no locked features and no login.

Question 4

Is there a file size limit?

Accepted Answer

There is no fixed server limit because everything runs in your browser. Very large images (over ~50 MB) may be slow on low-end devices.

Question 5

What formats are supported?

Accepted Answer

Input: any image your browser can decode. Output: JPG, JPEG, PNG, WEBP, AVIF, GIF, BMP, TIFF, SVG, ICO, HEIC, HEIF and PDF (support depends on your browser).

Question 6

Does the AI Background Remover work automatically?

Accepted Answer

Yes. Toggle it on and OneClick.pics runs a client-side segmentation model, then applies the color of your choice or a transparent PNG.

Question 7

Is my data stored?

Accepted Answer

Never. Your images are processed entirely in your browser and never uploaded to a server. Only your preferences are cached in local storage if you press ‘Save Settings’.

Question 8

Can I use it commercially?

Accepted Answer

Yes. There is no watermark and no license restriction — use the output for personal or commercial projects.

Frequently Asked Questions