Smart PDF Lab is a browser-based suite of 37 PDF and image tools that stays free with no signup, watermarks, or daily limits. Convert PDFs to and from Word, Excel, PowerPoint, JPG, and Markdown with OCR included on PDF to Word. Compress, merge, split, reorder, sign, and edit PDFs, and convert HEIC, WEBP, PNG, JPG, SVG, BMP, and GIF with resize and quality controls. Uploads use HTTPS, process on its servers, and auto-delete on completion. Every tool supports files up to 200MB.