About

LocalOptim is a professional toolbox to optimize images and PDFs (compression, conversion, cropping, watermark, QR code, PDF pages…). Processing is done locally in your browser to avoid uploading files to a server.

You stay in control of your documents: no account required, no server-side storage, and results downloadable immediately (with a localoptim_ prefix).

Why LocalOptim?

• 100% local processing, no upload.
• Simple, fast tools built for the web.
• Modern formats (WebP/AVIF if supported) and PDF export.
• Named and organized results (files or ZIP).

What you can do

Compress images for the web, convert formats, adjust quality, crop to the right ratio, and apply a watermark — all without leaving your browser.

• Compress, optimize, and convert images (JPG, PNG, WebP, AVIF*).
• Crop and resize with common ratios (1:1, 16:9, 9:16…).
• Add a text or logo watermark to a batch of images.
• Generate a QR code with real-time preview.
• Merge, split, and rotate a PDF, or export pages to images.

Note: AVIF encoding depends on the browser.