Compress Image Online
Shrink photos before you Base64-encode them. Processing stays on your device—no upload—so you save mobile data and keep private pictures local. Pick max width, quality and WebP or JPEG, then download or copy a data URI.
Save mobile data: compress before you share or Base64
In Brazil and other markets where prepaid data is expensive, uploading a 4K photo just to shrink it wastes the plan. This tool never uploads: it resizes and re-encodes locally, then lets you download or embed as Base64/data URI for HTML, CSS or APIs.
- WebP is usually the smallest for photos in modern browsers.
- JPEG when you need maximum compatibility (e-mail, older apps).
- PNG for UI/screenshots with sharp edges (larger files).
Next step for developers: Image to Base64 or read Compress before Base64.
Často kladené otázky
Why compress before Base64?
Base64 makes files ~33% larger as text. Compressing the image first (and converting to WebP) often cuts the final Base64 string by half or more.
Is this good for Brazil / expensive mobile data?
Yes. Everything runs locally, so you do not upload a large original just to compress it. Smaller files also mean cheaper WhatsApp, e-mail and hosting transfers.
Do you upload my photos?
No. Compression uses the browser Canvas API. Your image never leaves the device.
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