Bulk Image Compressor
Compress multiple images with quality and size controls, then download one ZIP.
Bulk Image Compressor helps prepare website uploads, email attachments, slide decks, and product images. Select 1 to 100 images, set quality, maximum dimensions, and output format, then review the per-file result list before downloading a ZIP.
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What this tool can do
- Process 1 to 100 images per batch
- Set quality, maximum width, and maximum height
- Choose auto, JPEG, PNG, or WebP output
- Download every result in one ZIP archive
Processing and limits
These tools use the FunnyTools Conversion API; the files you choose are sent to the API for processing.
Outputs are re-encoded according to your quality and dimension settings; originals are not overwritten. Check your organization policy before uploading personal, internal, or unpublished product material.
Choosing quality, dimensions, and format
A higher quality setting usually keeps more detail but may produce a larger file. For photos, start with a moderate value and compare text edges, fine lines, faces, and transparent areas. Maximum width and height limit the output dimensions; they do not enlarge an image beyond its source size.
Auto follows the source format. JPEG is useful for photos but does not preserve transparency; PNG is useful for interface screenshots and crisp text; WebP can be smaller on platforms that support it. Always confirm the format accepted by the destination upload field.
Review before downloading
After processing, review each filename, output format, dimensions, and size change before downloading the ZIP. Compression does not guarantee that every output is smaller, especially when a source image was already compressed. If a result grows or loses important detail, raise quality, keep the source format, or use a local tool instead.
The ZIP is only a convenient download container. Open representative files after downloading and check orientation, color, transparency, filenames, and appearance in the real website, slide deck, or form where they will be used. Keep the original batch until the resized copies have been accepted by the destination service. Confirm the final files also open correctly on the target device.
How to use
- Choose or drag in 1 to 100 images.
- Set quality, maximum dimensions, and output format.
- Start processing, review the file list, and download the ZIP.
Use cases
- Prepare images for a website or form upload.
- Create smaller slide, product, or social-media assets.
- Reduce a phone-photo batch before sharing it.
Who is it for
- Website editors and ecommerce operators
- Office workers preparing image attachments
- Creators preparing slide or social assets
FAQ
- How many images can I process?
- Up to 100 images per batch, with a default total batch limit of 120 MB. Speed also depends on image dimensions and API resources.
- Will every output be smaller?
- Not necessarily. The result depends on the source encoding, output format, quality, and dimensions. Inspect both size and visual quality.
- Are my files retained?
- Files are uploaded to the FunnyTools Conversion API for conversion and processed during the request; do not upload unnecessary personal or confidential data.
Privacy & temporary processing
Files are uploaded to the FunnyTools Conversion API for conversion and processed during the request; do not upload unnecessary personal or confidential data.
Trust & usage note
This is a server-side conversion tool; files you choose are sent to the FunnyTools Conversion API for temporary processing. Do not upload unnecessary personal or confidential data, and inspect the result after downloading.
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