tulzoo — free online tools that run in your browser
Drop your file anywhere
- PNG to JPGConvert PNG images to smaller JPG files. Many at once, ZIP download.
- WebP to JPGConvert WebP images from websites into regular JPG files.
- JPG to PNGConvert JPG photos to lossless PNG images.
- HEIC to JPGConvert iPhone HEIC photos to JPG. Several files at once, download as ZIP.
- SVG to PNGTurn SVG vector images into PNG at any size, with transparency.
- Compress PDFMake a PDF file smaller for email or upload — right in your browser.
- PDF to JPGSave every page of a PDF as a JPG image. Download one by one or as ZIP.
- Split PDFExtract pages or split a PDF into several files by ranges or every N pages.
- Merge PDFCombine several PDF files into one in the order you want.
- Delete & Reorder PDF PagesDrag pages into a new order, delete pages you don't need and turn sideways ones.
- Sign PDFDraw, type or upload your signature and put it on any page of a PDF.
- Rotate PDFTurn sideways or upside-down PDF pages — one page or all at once.
- Add Page Numbers to PDFNumber the pages of a PDF: position, format, first number and size.
- Watermark PDFAdd a text watermark like “CONFIDENTIAL” or “DRAFT” to every page of a PDF.
- 3D Model ViewerOpen STL, OBJ, 3MF, GLB and PLY models in your browser.
- Will It Fit My Printer?Check if a model fits your printer's build volume.
- 3D Model Volume & WeightVolume, surface, weight and filament cost of an STL.
- 3D Model Error CheckerFind holes, flipped faces and broken edges; repair them.
- Scale 3D ModelResize by percent, to an exact size, or convert inches to mm.
- Rotate & Lay FlatTurn a model and put its flat side on the bed.
- Model SplitterCut a big model into pieces that fit your printer.
- STL ↔ 3MF ConverterConvert STL to 3MF and 3MF to STL.
- STL ↔ OBJ ConverterConvert STL to OBJ and OBJ to STL.
- GLB / glTF ↔ STL ConverterGame and web 3D models to STL for printing, and back.
- Reduce PolygonsFewer triangles and a smaller file, same look.
- Mirror 3D ModelMake a left version from a right one (and back).
- Add Text to 3D ModelEmboss or engrave text on any side of a model.
- 3D Model to PNGClean product pictures of a model for a catalog or shop.
- Combine 3D ModelsPut several models into one file or fuse them.
- Compare Two 3D ModelsTwo models side by side with size, volume and triangle count.
- Laser Cut DesignerDesign laser-cut boxes — finger joint, flex, round-corner and heart boxes with living hinges — plus book covers and layered sculptures, and get SVG, DXF and PDF.
- JSON FormatterFormat, validate and view JSON as a readable tree.
- CSV ↔ JSONConvert CSV tables to JSON and JSON back to CSV.
- Compress Image to KBShrink a photo to an exact size, like 100 KB, for forms and uploads.
- JPG / PNG / WebP ConverterConvert images between JPG, PNG and WebP in one click.
- JPG to PDFTurn photos and images into one PDF. Choose the page size and order.
- EXIF Viewer & RemoverSee hidden photo data like location and camera, and remove it.
- 3×4 ID PhotoCrop a photo to 3×4 cm for documents, or get a print-ready 10×15 sheet.
- Image to Base64Convert an image to a Base64 data URI for HTML, CSS or JSON.
- Favicon GeneratorTurn an image into a favicon.ico and app icons for your website.
- SVG / Image to STLTurn a logo or drawing (SVG, PNG, JPG) into a 3D model.
- Lithophane MakerTurn a photo into a lithophane: flat, curved or a round lamp.
- Image to Heightmap STLLight areas high, dark areas low: a relief from any picture.
- Hash GeneratorMD5, SHA-1, SHA-256 and SHA-512 hashes of text or files.
We don't have a tool for this file type yet.