ThinkVault ToolsImage Workbench

Creative & Digital

Image Workbench

Crop, resize, convert and sample colours locally. Keep the original file.

Static PNG/JPEG/WebP; up to 20 MiB and 20 million pixels. Output up to 4,096 px per side and 16 million pixels. Animation is rejected.

Input and results stay in page memory. Shared links exclude both.

For smaller files in batches, use the image compressor

Results

Share link

Choose an image to start.

Local 8-bit canvas re-encoding can change colours and metadata; it does not guarantee all metadata is removed. JPEG uses white behind transparency. Quality does not apply to PNG. Files are not uploaded.

Method and common questions

Scope and limits

Crop, resize, convert and sample colours locally. Keep the original file.

Local 8-bit canvas re-encoding can change colours and metadata; it does not guarantee all metadata is removed. JPEG uses white behind transparency. Quality does not apply to PNG. Files are not uploaded.

How it works

Check dimensions and animation flags before browser decoding with orientation. Crop in decoded source coordinates; locked output height follows crop aspect ratio. Colour sampling reads one source pixel. Re-encoding may alter colour profiles and metadata; no complete metadata-removal guarantee.

Method

Check dimensions and animation flags before browser decoding with orientation. Crop in decoded source coordinates; locked output height follows crop aspect ratio. Colour sampling reads one source pixel. Re-encoding may alter colour profiles and metadata; no complete metadata-removal guarantee.

Last checked: 2026-10-26

W3C — PNG specificationGoogle — WebP RIFF Container

FAQ

Is the result guaranteed?
Local 8-bit canvas re-encoding can change colours and metadata; it does not guarantee all metadata is removed. JPEG uses white behind transparency. Quality does not apply to PNG. Files are not uploaded.
Are inputs included in shared links?
Input and results stay in page memory. Shared links exclude both.
Tool options

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https://hkdatalab.com/en

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