Free tools & guides
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Step-by-step guides and free converters from BizTray — private by design, no ads, no upload, no watermark.
Guides
Latest guides & how-tos
- 5 min read
How to Combine Multiple PNG Images Into One PDF (on Windows)
Merge a folder of PNGs into a single, correctly-ordered PDF on your own Windows PC — no upload, no file-size limit, no watermark, and no account.
Read more - 4 min read
How to Add a Watermark to a PDF (Free, on Windows)
Stamp DRAFT, CONFIDENTIAL or your own mark across a PDF on your own Windows PC. Every page or a range, batch a folder, no upload and no forced watermark.
Read more - 4 min read
How to Add Page Numbers to a PDF (Free, on Windows)
Add page numbers to a PDF on your own Windows PC — any position, any starting number, whole folders at once. No upload, no page cap, no watermark.
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Converters
Free converters
PNG to PDFTurn PNG images into a PDF on your own PC. One PDF per image or a whole folder merged into one — no upload, no file-size limit, no watermark.HEIC to PDFConvert HEIC photos from an iPhone into PDF on Windows, without installing codecs or uploading anything. Batch, offline, and no watermark.JPG to PDFConvert JPG images to PDF on your own Windows PC. Batch a whole folder, merge into one document, and keep every file off the internet.PPT to PDFConvert PowerPoint PPT files to PDF on your own PC. Whole folders at once, layout and fonts kept, nothing uploaded and no watermark.DOCX to PDFConvert DOCX to PDF on your own Windows PC without Word. Batch whole folders, keep your formatting, and upload nothing.PPTX to PDFConvert PPTX presentations to PDF locally on Windows. One page per slide, fonts preserved, whole folders at once, nothing uploaded.XLSX to PDFConvert XLSX spreadsheets to PDF on your own PC. Every sheet enumerated properly, nothing uploaded, no watermark and no page limit.TXT to PDFTurn plain text files into clean, paginated PDFs on your own PC. Batch a whole folder, no upload, no watermark, no limits.ODT to PDFConvert ODT OpenDocument files to PDF on Windows without installing an office suite. Local, batch, no upload and no watermark.RTF to PDFConvert Rich Text Format files to PDF on your own Windows PC. Batch a folder, keep the formatting, and upload nothing.HTML to PDFConvert HTML pages to PDF on your own PC with a real browser engine — modern CSS renders properly. No upload, no watermark, no download needed.EPUB to PDFConvert EPUB ebooks to PDF on your own Windows PC. Renders with a real browser engine, needs no extra download, and never uploads your library.PDF to PNGConvert PDF pages to PNG images on your own PC. Pick the page range and the resolution, batch whole folders, and upload nothing.PDF to PPTConvert a PDF into a PowerPoint deck on your own PC — one image slide per page. Free, offline, no watermark and no upload.PDF to PPTXConvert PDF pages into a PPTX presentation locally on Windows. One image slide per page, no upload, no watermark, no limits.PDF to TextExtract plain text from a PDF on your own PC. Batch a whole folder, pick a page range, and keep confidential documents off the internet.PDF to HTMLConvert PDF documents to HTML on your own PC, keeping headings and lists intact. Batch, local, no upload and no watermark.PDF to MarkdownConvert PDFs to clean Markdown on your own PC, with headings and lists preserved. Free, offline, no upload and no watermark.CSV to ExcelConvert CSV files to Excel workbooks on your own PC without mangling dates or dropping leading zeros. Batch, offline, free.XLSX to CSVConvert Excel XLSX workbooks to CSV on your own PC. Every sheet enumerated, UTF-8 preserved, batch a whole folder for free.CSV to XLSXConvert CSV to XLSX on your own Windows PC. Delimiters detected, UTF-8 preserved, batch whole folders, no upload and no cost.Pages to WordOpen and convert Apple Pages documents to Word DOCX on Windows. No Mac, no iCloud account, no upload — free and fully local.Numbers to ExcelConvert Apple Numbers spreadsheets to Excel XLSX on Windows. No Mac, no iCloud, no upload — free, local and unlimited.Keynote to PPTConvert Apple Keynote presentations to PowerPoint on Windows. No Mac, no iCloud account, no upload. Free and fully local.DOCX to DOCConvert modern DOCX files back to the legacy Word DOC format on your own PC. Free, offline, batch, and no watermark.DOC to DOCXModernise legacy Word DOC files to DOCX on your own PC. Convert a whole archive at once — free, local, no watermark.ODT to DOCXConvert ODT OpenDocument files to Word DOCX on Windows without an office suite. Local, batch, free and no watermark.XLS to XLSXConvert legacy XLS workbooks to modern XLSX on your own PC. Every sheet kept, no row limit, free and offline.XLSX to XLSConvert modern XLSX workbooks back to the legacy XLS format on your own PC. Free, local, batch, and no watermark.XLS to CSVConvert legacy XLS workbooks to CSV on your own PC. One file per sheet, UTF-8 output, batch a folder for free.XLSX to JSONConvert Excel XLSX spreadsheets into structured JSON on your own PC. Every sheet handled, UTF-8 clean, free and offline.Markdown to DOCXConvert Markdown files into Word DOCX documents on your own PC. Headings and lists become real Word styles. Free, offline, no watermark.DOCX to TXTStrip a Word DOCX down to plain text on your own PC. UTF-8 output, whole folders at once, free and offline.
Everything here is powered by BizTray — a free Windows document toolkit that runs entirely on your machine.