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, iOS, Android and Windows apps 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.
  • 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
  • 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

Interact with the above sites in my No Registration Web 2.0 LiveBinder.
Click here to view the Conversion Tools tab of my binder.

Updated April 15, 2021