thaitools.techPractical tools for life in Thailand
English interface

Local image compressor

Reduce image file size without uploading it to the server.

ReviewedGeneral utility
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.

Converted locally and never uploaded. JPG replaces transparent pixels with white.

How to use it

  1. Read the scope and effective-date note before entering information.
  2. Enter the requested values and review any validation message.
  3. Check the result, assumptions and cited source before relying on it.

Important limitation

Compression can remove detail; keep the original file when quality matters.

The interactive form is fully localized in English.

Reviewed 2026-08-26; next review 2027-08-26.

File types, sizes, names and local processing have been checked. Some images may not become smaller as WebP.

Sources

HTML Standard — Canvas image encodingWHATWG · opens in a new tabSupports browser canvas image encoding; actual size and quality depend on the image and browser.Source checked 2026-09-16
Recorded updates

Review history

Site changelog

Dates describe the review scope recorded below. A page update does not mean every source was checked again.

  1. Last recorded source/method review

    File types, sizes, names and local processing have been checked. Some images may not become smaller as WebP.

Related guides

Prepare images and PDFs locally before sharingUnderstand the meaning, scope and sources before using the result.

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