Convert Files Online
Most tools in this family run locally in your browser. A couple need server-side processing — each tool page says exactly which, and why.
Image format converters
PNG to WEBP
smaller page weight without losing PNG's transparency
WEBP to PNG
opening a WebP in software that doesn't support it yet, or archiving it in a universally-readable format
JPG to PNG
adding transparency support, or feeding the image into a tool that expects a lossless format
PNG to JPG
shrinking a screenshot or graphic for email or a page where transparency isn't needed
JPG to WEBP
cutting page weight for photos without a visible quality hit
WEBP to JPG
compatibility with older software, email clients or platforms that don't accept WebP
Data format converters
Data Format Converter
Convert between CSV, JSON and YAML, entirely in your browser
CSV to JSON
feeding spreadsheet data into an API, script or database that expects JSON
JSON to CSV
opening API output or a config file in a spreadsheet
JSON to YAML
turning API output or a data export into a more human-editable config file
YAML to JSON
feeding a YAML config file into a tool or script that only reads JSON
CSV to YAML
turning a spreadsheet export into a human-editable YAML config file
YAML to CSV
opening a YAML config file's data in a spreadsheet
Converting a file from one format to another — images into a PDF, a PDF into images, Office documents to and from PDF, text out of an image, or structured data between CSV, JSON and YAML. Most of these run locally in your browser; Office conversion is the exception, since it needs a real document engine that only a server can run — see below for exactly which.
Supported formats
Images to PDF accepts PNG and JPEG. PDF to Images outputs PNG or JPEG, packaged as a ZIP. Office to PDF accepts docx, xlsx, pptx, odt, ods, odp, rtf, doc, xls and ppt. PDF to Office outputs Word (.docx) or PowerPoint (.pptx) — Excel output isn't offered, since it can't be reconstructed reliably from a PDF. Image to Text (OCR) reads English text from an image or the first page of a PDF. The data format converter reads and writes CSV, JSON and YAML, any format to any other.
Questions.
Which of these run on a server instead of my browser?
Just two: Office to PDF and PDF to Office. Both need a real document engine (LibreOffice) that can't run in a browser tab, so the file is uploaded over HTTPS, converted, and deleted immediately afterward. Every other tool here — including all the image and data format converters — runs entirely on your device.
Can I convert a PDF to Excel?
No — that direction isn't offered here, since a spreadsheet can't be reliably rebuilt from a PDF's layout. PDF to Office supports Word and PowerPoint output only.
Does Image to Text work on scanned PDFs?
It reads the first page of a PDF as an image and runs OCR on it — so yes, for a single-page scan. For a multi-page scanned PDF, convert it to images first, then OCR each one.