Sada Files
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Upload image

Add image from your device to get started

Drop your image here

Drag & drop, paste, or click to select image for Thumbnail Generator.

Or drag and drop a file here

JPGPNGWebPAVIFGIFBMPTIFFHEICHEIF

Thumbnail Generator online, free

Several sizes at once (150, 300, 600…) plus a ready srcset snippet.

  • Runs in your browser — no upload
  • Free, no sign-up, no watermark
  • JPEG
  • PNG
  • WebP
  • AVIF
  • GIF
  • BMP
  • TIFF
  • HEIC / HEIF

How to use Thumbnail Generator

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    Add your JPEG, PNG and WebP file

    Drop a file on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.

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    Fine-tune the settings

    Set format in the Fine-tune panel, or keep the defaults — they suit most files.

  3. 3

    Run Thumbnail Generator

    Press the start button. Processing happens on your device, usually in seconds.

  4. 4

    Download the result

    Save the finished file, or continue with another tool without downloading in between.

What Thumbnail Generator can do

  • Format: same, webp, jpg and png
  • Private by design — files are processed in your browser and never uploaded
  • Free with no sign-up, no watermark and no daily limit

Thumbnail Generator — frequently asked questions

Is Thumbnail Generator really free?

Yes. Thumbnail Generator is free forever on Sada Files — no ads, no premium tier, no watermark, no daily cap that pushes you to pay. Every option on this page is available to everyone.

Do I need to sign up or create an account?

No. There is no account system at Sada Files. Open the page, drop your file, pick your options and save the result. History and saved workflows stay on your device.

Is my file uploaded anywhere?

No. Thumbnail Generator runs on your device — in your browser using WebAssembly, or inside the free native app. Your file never leaves your computer or phone, which is why there is no upload wait.

Which formats does Thumbnail Generator accept?

Thumbnail Generator accepts JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF and HEIC / HEIF. Files are identified by their content, not their extension, so a mislabelled file still works.

Is there a file size or file count limit?

Only what your device can handle. Because processing happens locally there is no server cap, no queue and no "upgrade for larger files" message.

Can I chain Thumbnail Generator with other tools?

Yes. After every result a Continue with… menu lists every tool that accepts this output, and the file is handed over in memory. Save the chain as a workflow and re-run it on hundreds of files, or call it in one API request.

Does Thumbnail Generator work on my phone?

Yes. The web app works on Android and iOS browsers, and the free Sada Files app for Android, iOS, Windows, Linux and macOS runs Thumbnail Generator fully offline.

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