Does the image leave my browser?

No. The public optimizer encodes in this tab. The file is not uploaded and is not stored.

Which formats can I convert?

Drop HEIC, JPEG, PNG, WebP, AVIF, or JPEG XL. Convert to MozJPEG, Browser JPEG, WebP, AVIF, OxiPNG, Browser PNG, JPEG XL, or QOI. Crop, resize, reduce palette, rotate, flip, flatten, sharpen, and per-codec settings match a Squoosh-class editor.

How do I convert HEIC to JPEG or WebP?

Drop a HEIC or HEIF file on this page, set Convert to JPEG or WebP, and download. Safari decodes HEIC natively. Chromium loads a local decoder if needed. The file stays in this tab.

How do I use the API or MCP?

The /api page lists HTTP and MCP capabilities. An account is required. There is no public API key. Open Sign in, then I don't have an account.

Is there a paid plan?

Not yet. Use Sign in, then I don't have an account, if you need the API, MCP, or batch encode.

Skip to optimizer

Image optimizer

Optimize images

Free online image optimizer. Convert HEIC, JPEG, PNG, WebP, AVIF, and JPEG XL in your browser.

Original

Optimized

Edit

Crop, resize, reduce palette, rotate, and flatten in this tab. The file is not uploaded.

Crop

Method Aspect

Left

Top

Width

Height

Resize

Method Preset

Width

Height

Maintain aspect ratio Fit method Pad color Premultiply alpha channel Linear RGB

Reduce palette

Colors 256 Dither 1 ZX

Rotate Flip horizontal Flip vertical Flatten

Background

Sharpen

Compress

Convert to

Lossless

Quality 75 Effort 4

Advanced

Compress alpha Alpha quality 100 Alpha filter Auto-adjust filter strength Filter strength 60 Filter sharpness 0 Strong filter Sharp RGB→YUV conversion Passes 1 Spatial noise shaping 50 Preprocess Segments 4 Partitions 0

Preserve transparent data

Strip metadata Target file size

Kilobytes

Optimize images

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