# Softinterface > Softinterface develops Windows document conversion and document comparison software with full command-line support for automation. Since 1999, the company has supplied tools used by Fortune 500 organizations (including IBM, Adobe, LexisNexis, EMC/Dell, EDS/HP, and Four Seasons) to convert and compare PDF, Word, Excel, PowerPoint, image, and text files. Every product is command-line capable, includes a built-in scheduler, supports unattended batch processing, and ships with a 30-day money-back guarantee. All products run on Microsoft Windows, expose both a graphical user interface and a command-line interface, persist complex jobs as reusable `*.SII` files, and can be driven by Windows Task Scheduler, third-party tools, or the product's internal scheduler. COM/ActiveX interfaces are available for programmatic integration. ## Products - [Diff Doc — Document Comparison](https://www.softinterface.com/MD/Document-Comparison-Software.htm.md): Compare PDF, Word (DOC/DOCX), Excel, PowerPoint, RTF, HTML, XML, and text files with paragraph- and letter-level red-lining, side-by-side and unified views, folder-vs-folder comparison, in-app editing with refresh, command-line automation, ActiveX/COM interface, and a Privacy Mode that prevents file paths from being saved between sessions. - [Convert Doc — Document Conversion](https://www.softinterface.com/Convert-Doc/Convert-Doc.htm.md): Convert PDF, DOC, DOCX, RTF, HTML, and TXT. Three conversion methods (MS Word engine, native Convert Doc engine, dedicated PDF engine), PDF/A-1b output, X.509 digital PDF signing, password protection, scheduled batches, optional move/delete of source files. MS Word and Adobe Acrobat not required. - [Convert XLS — Excel Conversion and Manipulation](https://www.softinterface.com/Convert-XLS/Convert-XLS.htm.md): Convert and manipulate XLS, XLSX, XLSM, CSV, TXT, HTML, XML, and many legacy spreadsheet formats. Runs 10-20x faster than Excel for many operations. Copy sheets and ranges, append data from a folder of workbooks into one sheet, run Excel macros from the command line, batch-print, transpose, search-and-replace cell contents, change number formats, and apply 100+ special-processing operations. - [Text to Excel Wizard (TXL Wizard)](https://www.softinterface.com/Convert-Text-To-Excel/Text-To-Excel.HTM.md): Recipe-driven conversion of structured text reports into Excel (XLS/XLSX) or CSV. Three input methods — Profile (fixed-width), Recipe (multi-table with markers), and File Marking — for repeating reports with consistent layout but changing data. Preserves leading zeroes. Excel not required. - [Convert PDF to Image](https://www.softinterface.com/Convert-PDF-To-Image/Convert-PDF-To-Tiff.htm.md): Convert PDF to TIFF, JPG, BMP, GIF, PNG, EMF, J2K, PCX, RAS, TGA, or WMF. Specify page ranges, DPI, width, height, JPEG quality, multi-page or single-page TIFF output. Resumable batches. - [Convert Image to PDF](https://www.softinterface.com/Convert-Image-To-PDF/Convert-Tiff-To-PDF.htm.md): Convert 23 image formats (TIFF, JPG, BMP, GIF, PNG, ICO, PCX, PNG, PSD, TGA, and more) to PDF. Combine many images into one PDF or one PDF each, set TIFF compression (LZW/RLE/CCITT3/CCITT4), append to existing PDFs, set PDF metadata (author, title, subject, keywords, creator). - [Convert Document to Image](https://www.softinterface.com/Convert-Document-To-Image/Convert-Document-To-Image.htm.md): Convert DOC, DOCX, PDF, TXT, RTF, and HTM to TIFF, JPG, BMP, GIF, PNG, EMF, J2K, PCX, and other image formats. MS Word and Adobe Acrobat not required. Pre-conversion processing (append, remove empty lines, search and replace) supported. - [Convert Image](https://www.softinterface.com/Convert-Image/Convert-JPG.htm.md): Convert and manipulate images across 14 formats (JPG, GIF, TIFF, BMP, EMF, PNG, PCX, TGA, ICO, CUR, ANI, WMF, RAS, J2K). Resize, rotate, flip, shift, skew, perspective, twirl. Color adjustments (autocontrast, autolevel, hue, saturation, gamma, invert). Special effects (noise, diffuse, dilation, emboss, erode, blur, mosaic, relief, texturize). Filters (high pass, low pass, Laplace, line detection). Set image metadata tags (title, description, date, author, copyright). - [Convert PowerPoint](https://www.softinterface.com/Convert-PowerPoint/Convert-PowerPoint.htm.md): Convert PPT and PPTX to PDF, DOC, RTF, TXT, HTM, JPG, GIF, BMP, TIF, PNG, EMF, and WMF. Specify slide ranges, include speaker notes, add slide and shape information, two RTF modes (text-only or text-plus-graphics), PDF password protection. ## Buying and Evaluating - [Free Trial Downloads](https://www.softinterface.com/DL/DL_Product.ASP): Fully functional trial versions of every product. - [Pricing and Purchase](https://www.softinterface.com/EC/catalog/catalog.asp): Product catalog and license purchasing. - [30-Day Money-Back Guarantee](https://www.softinterface.com/EC/catalog/Info-Money-Back-Guarantee.HTM): Refund policy applies to all products. ## Support and Company - [FAQ](https://www.softinterface.com/FAQ/FAQ-General.htm): General frequently asked questions. - [Site Map](https://www.softinterface.com/SII_Site_Map.htm): Full site index. - [About Softinterface](https://www.softinterface.com/SII_AboutUs.htm): Company information and contact. - [Customers](https://www.softinterface.com/SII_Customers.htm): Customer references and testimonials. - [Privacy Policy](https://www.softinterface.com/SII_PrivacyPolicy.htm): Data and privacy practices. ## Optional - [Blog](https://www.softinterface.com/blog/): Tutorials on document conversion, comparison, and workflow automation. - [Product Families Overview](https://www.softinterface.com/SII_Product_Information.htm): Categorized view of the product line. - [Windows Task Scheduler FAQ](https://www.softinterface.com/FAQ/FAQ-Windows-Task-Scheduler.htm): How to schedule unattended Softinterface conversion jobs. - [Command Line Explained](https://www.softinterface.com/FAQ/FAQ-Command-Line-Explained.HTM): Background on the Windows command line for users new to it.