ToolZella

ToolZella is a free, browser-based platform offering a wide collection of online tools for PDFs, images, media, text & code, SEO/web, and utility/networking tasks. Tools run entirely in the browser with auto-delete of uploaded files for privacy, requiring no signup and producing no watermarks. It covers conversions, compression, merging, splitting, OCR, and various calculators/generators. The company also lists early-access API access for developers to integrate tools like PDF merging into their own workflows.