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Image Compression & Conversion

Processing and format details+
Core processing
100% browser-local
Tool data upload
No application-server upload
Browser technology
Web Worker + JSquash WASM + Canvas
Formats / output
JPEG, PNG, WebP, AVIF, BMP, TIFF, SVG, GIF first frame → JPEG, PNG, WebP, AVIF, BMP

LOCAL IMAGE WORKBENCH

Compress and convert, your way

Pick a local processing path for the job: Canvas Fast for an immediate everyday export, or WASM Efficient for broader formats and deeper compression. Nothing is uploaded.

Processing mode

WASM Efficient is selected: use it for AVIF, BMP, TIFF, SVG and more reliable compression.

Selected: Web balance · max 1920px · quality 82%.

OPTIONAL CONTROLS

Advanced export settings

Set exact dimensions, quality and the opaque background only when the quick preset is not enough.

JPEG and BMP use the selected background for transparent pixels. GIF input is converted from its first frame; use GIF Studio to keep animation.

Choose an image to begin.

ORIGINAL

Choose a local image

RESULT

Process to compare

About this tool+

Pick a local processing path that matches the job, then set format, quality and dimensions without uploading your image. Canvas Fast is ideal for an immediate JPEG, PNG or WebP export; WASM Efficient reads JPEG, PNG, WebP, AVIF, BMP, TIFF, SVG and a GIF first frame, and can export JPEG, PNG, WebP, AVIF or BMP.

BEST FOR

Anyone preparing lighter images, converting everyday image formats, or creating web, form and sharing assets.

  • Canvas Fast for everyday JPEG, PNG and WebP exports
  • WASM Efficient for broader inputs and AVIF / BMP output
  • Set maximum dimensions, quality and a background for non-transparent output
  • Compare original and output dimensions and file sizes before download
How to use+
  1. 1

    Choose a static image and inspect the original

  2. 2

    Pick Canvas Fast or WASM Efficient, then set format, dimensions and quality

  3. 3

    Process it entirely in the browser

  4. 4

    Compare the result and download it

Tips and examples+

PRACTICAL EXAMPLE

Choose the delivery format before choosing compression strength

Compression and conversion should start with the destination, not just the smallest file. Choose Canvas Fast for immediate JPEG, PNG and WebP processing, or WASM Efficient when you need AVIF, BMP, TIFF, SVG or a broader, more consistent conversion path. JPEG, WebP and AVIF work well for most photos; PNG, WebP and AVIF are better when transparent edges matter. Limit pixel dimensions first, then lower quality gradually for lossy output.

Example: prepare a large PNG product image for the web

For a 2400 × 1600 transparent PNG, first decide whether the background needs to remain transparent. Use Canvas Fast for a quick JPEG or WebP draft; choose WASM Efficient if you need an AVIF result or wide-format source support. If transparency must remain, choose WebP, AVIF or PNG. Inspect the product edge, text and shadows, then fine-tune quality for the destination's size limit.

Before you download

  • Confirm that the recipient accepts the chosen output format; GIF input is read as its first frame here
  • Inspect enlarged text, fine lines, transparent edges and faces for visible artifacts
  • Keep the original file; do not replace your only source image with a compressed copy

Frequently asked questions about Image Compression & Conversion

Frequently asked questions+

Is my image uploaded to a server?

No. Reading, resizing, encoding and downloading happen in the current browser.

Which processing mode should I choose?

Canvas Fast is a browser-native path for quick JPEG, PNG and WebP work. Choose WASM Efficient for broader image inputs, AVIF or BMP output, and a more consistent compression path.

Which image formats can I export?

Choose JPEG, PNG, WebP, AVIF or BMP. PNG, WebP and AVIF preserve transparency; JPEG and BMP use your selected background.

How does GlobalCoreHub handle data in Image Compression & Conversion?

GlobalCoreHub runs the core Image Compression & Conversion workflow in the current browser. Tool input is not uploaded to the GlobalCoreHub application server; any local saving described on this page stays in the current browser until its site data is cleared.

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