Batch Image Compressor
Compress multiple images at once with one quality setting.
Open toolBatch Tools
Process many images or PDFs at once — compress, resize, convert, rename or merge — and download the results in one ZIP. 7 free tools in this category, all running entirely in your browser.
Batch Image Converter
Convert multiple images to one target format at once.
Open toolBatch Image Resizer
Resize multiple images to a maximum width at once.
Open toolBatch Image Renamer
Rename multiple images at once using a custom pattern.
Open toolBatch Image to PDF
Convert multiple images into separate PDF files at once.
Open toolBatch PDF Compressor
Compress multiple PDF files at once with one compression level.
Open toolBatch PDF to JPG
Convert every page of multiple PDFs into JPG images at once.
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FAQ
Questions about Batch Tools
What tools are available in Batch Tools?
This category groups together 7 tools for processing many images or PDFs at once, downloading every result together in a single ZIP file. Every tool listed above is fully working.
Are these tools free to use?
Yes. Every tool on Calcooo is completely free and does not require an account.
Is my data safe when I use these tools?
Yes. Every batch tool processes your files entirely inside your browser and packages the results with JSZip — nothing is uploaded to Calcooo or any server.
What if I only need to process one file?
Use the equivalent single-file tool instead — for example Compress Image or Compress PDF — which offers a simpler flow when you don't need a ZIP of many results.