DocTools Pro

DocTools Pro is organised into four main workspaces. The Universal Converter cross-converts more than 20 file types across documents, images and spreadsheets — PDF, DOCX, ODT, PPTX, EPUB, RTF, TXT, HTML, JPG, PNG, WebP, HEIC, SVG, BMP, TIFF, GIF, CSV, XLSX, ODS and XLS. Document Studio handles PDF and Word operations such as merging, splitting, rotating, reordering, watermarking, compressing, protecting and OCR. Image Engine covers resizing, cropping, compression, background removal and image encryption, including HEIC and WebP inputs. Encrypt & Lock applies password protection to documents, images, audio, video and archives, with decryption handled in the same place.

The workflow is deliberately minimal: drop files onto a tool or browse for them, choose the output format or settings (applied to all files at once or configured per file), and the results save straight to your device. There are no accounts, no uploads and no queues, and you can mix different file types in one batch.

The core selling point is privacy. Because the tools run in the browser through client-side code, files are never uploaded to a server, nothing is logged, and closing the tab clears everything. The site also notes that once a page has loaded, most tools keep working even if the internet connection drops, and it markets the tool explicitly against cloud converters that impose 10–25 MB file-size limits and require sign-ups. DocTools Pro is free and built in Switzerland.