Free online tools that never upload your files.
Merge PDFs, shrink photos, clean up a spreadsheet, send a personal email to everyone on a list. 15 tools in 6 groups, all running in your browser, every one tested before it goes up.
- PDF Merge and SplitCombine PDFs, reorder or rotate pages, or split one into several.
- Photo to Scan PDFStraighten phone photos of pages and save them as a clean PDF.
Images
- Image CompressorShrink photos and screenshots, or fit them under a file size limit.
- Screenshot RedactorBlack out or pixelate private details in a screenshot.
Spreadsheets
- Excel StudioCompare two spreadsheets by an ID column and see every changed cell.
- Duplicate RemoverFind duplicate rows, even with different spaces or capitals, and clean the list.
- Formula ExplainerRead any Excel formula in plain English, or find the right one.
- Data ToolkitSplit, merge and reshape sheets, and fix mixed-up dates.
Text and writing
- Mail Merge LiteWrite one email, fill in each name from an Excel list, and get drafts.
- Answer CleanerPaste a ChatGPT answer into Word or email without the asterisks.
- Multi Find and ReplaceReplace a whole list of words in one go.
- Snippet LibraryKeep the prompts and replies you type every week.
Privacy
See all 3 in PrivacyPlanning
- Text to Gantt ChartPaste a task list, get a timeline for your slides.
- Decision MatrixScore your options and see which weight would change the answer.
Guides and tests
How to get office jobs done, and what happened when I tested AI on them.
- I tried to trick AI into making things upThree Claude models, 14 things that do not exist, and every DOI and ISBN checked by hand. It caught 125 of 126 fakes.
- AI for complete beginners: your first 10 minutesA minute-by-minute plan for your first chat with an AI, with prompts you can copy.
- How to quiet a mechanical keyboard in the officeFixes ranked from free to about $60, so your coworkers stop noticing your typing.
- Claude Code and MCP for beginnersWhat MCP servers are, which ones are worth installing, and what each one is for.
How the tools are tested
Each tool gets its own set of automated checks before it is published. The results are compared with hand calculations and, for the tools that calculate something, with a second, separately written version of the same logic run on hundreds of random inputs.
What was tested, and what was not, is written up at the end of every tool page.