Tools that just work.

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PDF, 3D printing, data and devices. Free, no sign-up, files stay on your computer. Made by real engineers.

Merge PDF ★ Split PDF ★ PDF to Excel ★ STL Repair ★ Gear Generator ★ Print Cost ★ Serial Logger ★ Merge PDF ★ Split PDF ★ PDF to Excel ★ STL Repair ★ Gear Generator ★ Print Cost ★ Serial Logger ★
PDF

Merge PDF

Many files, one document.

PDF

Split PDF

Take only the pages you need.

PDF

PDF → Excel

Tables you can actually edit.

PDF

Compress

Smaller file, same look.

3D

STL Repair

Holes closed, ready to print.

3D

Gears

Spur and bevel, printable.

3D

Print Cost

Grams, hours, money.

Devices

Serial Log

Plot what your board says.