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SentrueFile

Image tools

Get photos and pictures to the size, dimensions and format a form or website asks for - privately, in your browser.

Which image tool do I need?

Forms and websites usually set one of three rules for pictures. Each tool handles one of them, and they work well one after another.

  • A file size limit ("under 100 KB"): Compress Image brings photos under the limit, keeping as much quality as it can.
  • Exact dimensions ("600 × 600 pixels"): Resize Image scales or crops to exact width and height without stretching.
  • A particular format ("JPG only"): Convert Image switches between JPG, PNG and WebP, several at once.
  • Both size and dimensions: Resize first, then compress - each step keeps the result as sharp as possible.

Working with photos privately

The pictures people resize and compress are often personal: passport photos, signatures, ID cards. Here, your browser does all the work on your device; nothing is uploaded, and camera details such as location are not copied into converted or compressed files.

Questions

Are the image tools free?

Yes - free, with no sign-up and no watermark, as many times as you need.

Which formats are supported?

JPG, PNG and WebP, in and out. iPhone HEIC photos aren't supported yet; set the camera to Most Compatible to save new photos as JPG.

How many images can I do at once?

Up to 20 images of up to 25 MB each. Several results download together as one ZIP file.

Will my photos lose quality?

Compressing and converting to JPG or WebP trade a little detail for a smaller file; at the default settings the difference is hard to see. Resizing down keeps the picture sharp; PNG keeps every pixel.