converteo.app

Convert Images

Convert images between JPG, PNG and WebP formats

Processed in your browser — 100% private

Different formats exist for different jobs: JPG is the web's default for photos, PNG for graphics with transparency, and WebP for modern-browser pages where every kilobyte counts. Our converter lets you switch between all three in a batch, with an adjustable quality slider for lossy formats. Everything runs locally — your images never leave your browser.

How to convert image formats

  1. Drop your images into the window.
  2. Choose the target format (JPG, PNG or WebP) and adjust quality.
  3. Download each converted image, or all of them as a ZIP.

Supported formats

Input: JPG, PNG, WebP. Output: any of the three, with quality 1–100 for JPG and WebP.

Why convert with converteo.app

  • Your images stay on your device — zero server involvement.
  • Batch mode: convert hundreds of images in a single pass.
  • Preserves transparency when going to PNG or WebP.
  • Free, unlimited, no watermark.

Convert Images — Frequently asked questions

Which format should I choose?
JPG for photos on the web, PNG for logos, screenshots and anything with transparency, WebP for modern websites where size matters and you don't need compatibility with very old browsers.
Does converting JPG to PNG improve quality?
No. Once JPG has lost detail through compression, converting to PNG preserves the current state but recovers nothing. PNG simply won't add further loss.
What quality setting should I use?
For JPG: 80–85 for photos, 90+ if you need near-perfect fidelity. For WebP: similar range, with smaller output files for the same perceived quality.
Is conversion fully private?
Yes. Everything runs via the Canvas API in your browser. No file is uploaded, no metadata is collected.