Arivanandhan Tools Blog
Tutorials, guides, productivity tips, developer resources, AI insights, and best practices to help you get more from our tools.
How to merge PDF files online (free, no watermark)
Combine multiple PDFs into one document in seconds — securely, with no sign-up and no watermarks.
3 min readImage ToolsHow to compress images without losing quality
Shrink JPG, PNG and WebP files for faster websites and smaller uploads — all in your browser.
4 min readDeveloper UtilitiesJSON formatting best practices for developers
Validate, beautify and minify JSON the right way — and avoid the most common JSON mistakes.
4 min readAI ToolsHow AI document summaries work (and when to use them)
Turn long documents and PDFs into clear key points with AI — what it's good at and how to get the best results.
4 min readDeveloper UtilitiesBase64 encoding and decoding: a practical guide
What Base64 is, when to use it, and how to encode or decode text and files safely in your browser.
3 min readPDF ToolsHow to split a PDF online (extract or separate pages, free)
Split a large PDF into separate files or pull out specific page ranges — instantly, in your browser, with no sign-up.
3 min readPDF ToolsHow to compress a PDF online without losing quality
Reduce PDF file size for email and uploads while keeping it readable — free, private, and in your browser.
3 min readPDF ToolsHow to convert a PDF to JPG images (free, high quality)
Turn each PDF page into a crisp JPG image for slides, previews, or sharing — instantly and privately.
3 min readPDF ToolsHow to convert JPG to PDF online (combine images into one PDF)
Merge photos and scans into a single, tidy PDF in the right order — free, no watermark, no sign-up.
3 min readCSV & SpreadsheetHow to convert CSV to JSON online (for developers and analysts)
Transform spreadsheet CSV data into clean, structured JSON in seconds — entirely in your browser.
3 min readImage ToolsHow to convert PNG to JPG online (smaller files, free)
Convert PNG images to compressed JPG for smaller files and easier sharing — instant and private.
3 min readPDF ToolsThe best free online PDF tools that don't upload your files
A privacy-first toolbox for merging, splitting, compressing and converting PDFs — all running in your browser, free and without sign-up.
5 min readMore guides coming soon
New tutorials, tool guides, AI resources, and productivity content are added regularly.