HelloTools.app

Free online tools for converting, compressing, and SEO.

Convert images to WEBP, resize in pixels, compress PDFs, generate UTM links, hashes, slugs, UUIDs, and more — all client-side for privacy and speed.

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Why WEBP?

WEBP delivers smaller file sizes at similar visual quality compared to JPEG and PNG — helping performance and Core Web Vitals.

  • Lossy & lossless compression
  • Transparency & animation support
  • Widespread browser support

FAQ

Do you upload or store my images?

No. Everything runs locally in your browser using HTML Canvas. Nothing leaves your device.

Is there a file size limit?

For best performance, we recommend images under ~50MB. Larger files can work depending on your device.

Will you add more formats?

Yes. Request a format and we’ll add it — the grid updates easily.