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Reduce image size with quality and dimension settings

Make an image more suitable for uploading or sending by choosing appropriate dimensions and compression. The result depends on the source format and subject; an already compressed file can become larger rather than smaller.

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In this guide

How it works

  1. Open the still image and decide which dimensions you actually need.

  2. Choose JPG or WebP, set the quality and reduce the maximum edge if appropriate.

  3. Download the output and compare file size, text edges and important visual details.

Input, result and limits

PropertyDetails
InputJPG / PNG / WebP / HEIC
OutputJPG / PNG / WebP
Important limitationSavings depend on the file; there is no fixed compression ratio.

The workflow in six views

Reduce image size with quality and dimension settings — Input: Open the still image and decide which dimensions you actually need.

1Input

Open the still image and decide which dimensions you actually need.

Reduce image size with quality and dimension settings — Settings: Choose JPG or WebP, set the quality and reduce the maximum edge if appropriate.

2Settings

Choose JPG or WebP, set the quality and reduce the maximum edge if appropriate.

Reduce image size with quality and dimension settings — Apply: JPG / PNG / WebP / HEIC → JPG / PNG / WebP

3Apply

JPG / PNG / WebP / HEIC → JPG / PNG / WebP

Reduce image size with quality and dimension settings — Before and after: Original file → Edited copy

4Before and after

Original file → Edited copy

Reduce image size with quality and dimension settings — Review: Compare file size with the original Check background, transparency and colours Check small text at normal viewing size

5Review

Compare file size with the original Check background, transparency and colours Check small text at normal viewing size

Reduce image size with quality and dimension settings — Save: Download the output and compare file size, text edges and important visual details.

6Save

Download the output and compare file size, text edges and important visual details.

Example

Before

Original file

After

Edited copy

Check these details in the result

  • Compare file size with the original
  • Check background, transparency and colours
  • Check small text at normal viewing size

Useful next steps

Convert a still image to JPG, PNG or WebPConvert one still image to JPG, PNG or WebP. Set quality and maximum edge length, then review transparency and colours in the result.
Join images side by side or in a vertical stripCombine 2 to 20 still images into one JPG, PNG or WebP file. Choose direction and order, then check the effect of differently sized source images.
Convert JPG and PNG images to PDFBring JPG and PNG images together in a PDF. Check the image order and review the generated pages before downloading.

Keep only the resolution the task needs

A large camera photograph often needs fewer pixels when used as a small preview. The edge limit scales proportionally and never enlarges a smaller image. Text, logos and fine lines may deserve a higher quality setting than an unimportant thumbnail. Judge the output at its intended display size as well as checking a close view of critical details.

Changing format can change appearance

JPG is lossy and places transparent areas on white. WebP can retain transparency. PNG gives a lossless output but does not guarantee a smaller file. A notice indicates when the generated image is larger than the input. Keep your original and avoid unnecessary repeated JPG saving if you want to preserve detail for future edits.

Frequently asked questions

Will every image become smaller?

No. Subject matter, previous compression, format and chosen dimensions determine the resulting file size.

Does lowering quality help with PNG too?

The quality control affects JPG and WebP. For PNG, choosing suitable dimensions is the more relevant way to reduce size.

Reduce image size with quality and dimension settings

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