No Registration Web 2.0 Conversion Tools
General Converters
  • Crop PDF: Crop white boards from PDFs for easier viewing on mobile devices. Example
  • DocsPal Online File Converter: Converts all kind of documents, video, audio, images, e-books and archives and allows viewing in your browser
  • DocuPub: Converts documents to PDF or image format including files from Microsoft Works, WordPerfect, Lotus, Microsoft Office and a large number of image formats
  • EasyUnitConverter: EasyUnitConverter provides a set of mathematical tools that includes 2000+ units conversion and online calculations. Each tool is developed based on formulas  taken from Wikipedia & Academic books. NEW
  • Konwerter: Converts documents, images, ebooks, and pdf's. Deletes your files at conclusion of process.
  • MergeFiles.es: Combine/merge multiple files of varying formats. Choose output to PDF, doc, Excel, PowerPoint (Coming), and MP3. Files retained only temporarily.
  • Online Converter: Free audio, video, image, document, e-book, and hash generator.
  • pdf2x: Sciweavers' pdf conversion tool that extracts images from pdfs, converts pdf to thumbnails, text or postcscript, divides a pdf into single pages or repairs if possible damaged pdf files.
  • Smallpdf: Suite of tools to compress, merge, split, unlock and convert images to and from pdf, and Word-Excel-PPT to pdf. . Convert suitable doc, docx, epub, fb2, html, lit, lrf, mobi, odt, pdb, pdf, prc, rtf and txt files to epub, fb2, lit, lrf or mobi. Chrome extension available
  • Also check out Productivity PDF Tools
Multimedia Converters
  • Apowersoft Free Video to MP3 Converter: Video to MP3 converter of online video files or streaming video as well as support for MAC and Windows video.
  • Croppio: Easy cropping tool for images, audio, and video from your computer/device or a URL. All originals are deleted from their servers after 1 hour. Be careful with ads above and below work area. NEW
  • Fileconverto: Convert, compress audio/video/images, remove and extract audio, or softer or increase audio. All capabilities of this tool were tested successfully. Tool was used to compress the iMageToVideo Example
  • i2img: One of Sciweavers tools supporting and converting the following formats:PG, PNG, BMP, GIF, TIFF, PBM, PGM, PPM, WMF, SGI, PDF, EPS, FIG, PS, SVG, RGB Sciweavers
  • Media.io: Online audio converter that converts nearly 30 file types.
  • Online Audio Converter (123apps): Part of the suite of tools from 123apps. Convert a wide variety of formats, convert multiple files at once and extract audio from video.
OCR Converters
  • Convert Scan PDF: Online OCR tool that scans a PDF and converts it to Word keeping formatting of original document.
  • i2OCR: Sciweavers' online OCR tool to extract text from images in 60 + languages and allows for unlimited uploads. Extracts text from images so that it can be edited, formatted, indexed, searched, or translated. Example with Comparison to Online OCR
  • NewOCR: Online OCR service analyzing uploaded or online images for text, recognizes 58 languages, and outputs to a doc, pdf, or txt file. Example
  • OCR Space: Converts scans or (smartphone) images of text documents into editable files and download results as Text. Example
  • Online OCR: Extracts text from PDFs and images in 46 languages to Word, Excel or Text formats. Example with Comparison to i2OCR

Links verified October 12, 2020