Explore BFOTKit’s free online tools for everyday file, document, measurement, and data tasks. Use practical browser-based utilities without installing software.
Explore the toolkitGive a large batch of files consistent names with custom sequential numbering and zero-padding. Bring files together from multiple folders, preview and reorder the sequence, then download renamed copies in one ZIP.
Batch convert ESRI ASCII Grid (.asc) files into CSV, preview each raster, and optionally reproject coordinates. Your grid files stay in your browser.
Use an online ruler in inches, cm, mm, or pixels. Calibrate the four screen-edge scales to your display and pin X/Y points for alignment.
Measure a sewing pattern test square, calculate the print percentage, and download a corrected PDF in your browser.
Convert every PDF page into a JPG image, then download all pages in one ZIP file.
Combine multiple PDFs into one document and arrange the files before merging.
Put JPG or PNG images into one PDF with a page for each image.
Reduce a PDF's size with strong, balanced, or light browser-based compression.
Extract selectable text from a PDF and save it as an editable DOCX file.
Preview CSV columns, choose a delimiter and encoding, then download an XLSX workbook that preserves leading zeros and long IDs.
Print a calibration sheet and shift the back pages of a PDF by a measured X/Y offset.
Fit mixed PDF pages onto A4, A3, Letter, Legal, or a custom size in millimeters or inches. Convert several PDFs in one batch.
Split a large PDF page or image across A4 or Letter sheets with overlap, alignment marks, and a print scale bar.
Turn repeating XML records into an Excel workbook with columns for their fields and attributes.
Make JSON records readable in Excel with one row per object and clear column headings.
Extract selectable text from PDF pages into a spreadsheet you can inspect and edit.
Turn repeating XML records into a plain CSV table for spreadsheets and imports.
Export JSON records as a CSV table with one row per object.
Convert an XML document to readable, formatted JSON in your browser without uploading the file.
Turn JSON objects and arrays into an XML document with a root name you choose.
Make a delimited table into a JSON array of records.
Export rows from an Excel sheet as a JSON array with column names.
Turn spreadsheet rows into structured XML records.
Create XML from CSV rows and column headings.
Convert SRT subtitles into an Excel spreadsheet with one row for each cue and separate columns for timing and caption text.
Turn a subtitle spreadsheet into a timed SRT caption file.
Prepare an SRT caption file for a player that expects WebVTT.
Create a readable PDF from the text in a Word DOCX document.
Save a worksheet as a printable PDF table.
More useful browser tools will be listed here as they’re added.