Tools that run inside your browser tab.

Whatever you put in stays exactly where it is. The work happens on your own machine, in the tab you already have open. Nothing you open is ever uploaded. There is no server to upload it to. No account, no queue, no upload bar.

• Reorder PDF pagesPDFSee every page as a thumbnail, drag them into a new order or reverse the lot, and save the rearranged PDF. In your browser: free, no upload, no watermark.
• Delete PDF pagesPDFRemove chosen pages from a PDF and save the document without them; the deleted pages leave the file for real. In your browser: free, no upload, no watermark.
• JPG to PDF converterPDFTurn JPG or PNG images into one PDF, each picture on its own page, in the order you choose. Runs in your browser: free, no upload, no watermark, no limits.
• Merge PDF filesPDFCombine two or more PDFs into a single file, in the order you choose, entirely in your browser. Free, with no upload, no watermark, no signup and no page limits.
• Rotate PDF pagesPDFTurn every page, or just the sideways ones, 90° either way or upside down, and save the rotation into the file. In your browser: free, no upload, no watermark.
• Split a PDFPDFSplit a PDF into separate files, extract a page range, or save every page as its own PDF, in your browser. Free, no upload, no watermark, no page limits.
• EXIF removerImagesSee what a photo is carrying, GPS position, camera and date, then strip it in your browser. Nothing is uploaded, and the picture itself is untouched, byte for byte.
• Image resizerImagesResize a JPEG, PNG or WebP to exact pixels, a percentage, or a common web width, in your browser. Nothing is uploaded; your image never leaves your device.
• Invoice generatorDocumentsFill in the form, watch the invoice take shape, download the PDF. No account, no email gate, and nothing you type, including bank details, is sent anywhere.
• Image compressorImagesShrink JPEG, PNG and WebP images in your browser: pick a quality, or a target size such as 200 KB. Nothing is uploaded; your image never leaves your device.
• QR code generatorSecurityCreate QR codes for links, wifi or a contact card, with an optional centre logo. Each code is decoded in your browser to prove it scans; nothing is uploaded.
• Password generatorSecurityGenerate strong random passwords in your browser using your device's own cryptographic randomness. Nothing is sent, stored or logged; there is no server involved.
• LEGO mosaic makerCreativeTurn a photo or logo into a LEGO® mosaic you can actually build, matched only to brick colours still in production. Runs in your browser; nothing is uploaded.

Why an otter, and why in the browser

The otter is for the name: tab plus otter, a small creature that lives in your browser tab and does the fiddly jobs. Otters are also one of the few animals that use tools without being asked to, which felt about right.

The browser part is the serious half. Almost every converter you find asks you to upload the file first, which means handing a stranger your passport scan, your bank statement or your photographs, and then trusting a paragraph of legal text about what happens to them next.

None of that is necessary any more. Browsers have been able to decode images, read PDFs, crunch spreadsheets and generate proper cryptographic randomness on their own for years, and these tools simply use that. Nothing you open leaves the tab, and the work happens on your own hardware.

Which is the bit worth holding on to: that is not a promise about my conduct, and you have no particular reason to take one of those on trust. It is a property of how the tools are built, and you can watch it happen in your browser's network tab.