FlexyPdf

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84 free tools

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PDF Tools10
PDF EditorJPG to PDFPDF to WordWord to PDFPDF Splitter+5 more tools
Image Tools10
PNG to JPG ConverterImage CompressorResize ImageImage to ASCII ArtSVG Optimizer+5 more tools
Converters14
CSV to JSONJSON to CSVJSON to YAMLBase64 Encoder/DecoderHEX to RGB+9 more tools
Developer Tools11
Code BeautifierJSON Formatter & ValidatorXML ValidatorMarkdown EditorLive Code Editor+6 more tools
SEO Tools5
Meta Tag GeneratorRobots.txt GeneratorXML Sitemap GeneratorSEO Title AnalyzerKeyword Density Checker
Text Tools7
Word CounterLorem Ipsum GeneratorReadability CheckerPalindrome CheckerAnagram Checker+2 more tools
Calculators6
BMI CalculatorAge CalculatorEMI CalculatorGST CalculatorPercentage Calculator+1 more tools
Generators11
Random String GeneratorQR Code GeneratorBarcode GeneratorPassword GeneratorCountdown Timer+6 more tools
Audio & Video5
Audio CutterVideo CutterAudio Volume NormalizerFile ViewerDuplicate File Finder
Design Tools5
Color PickerColor Palette GeneratorFont PreviewColorblind SimulatorContrast Checker

All tools are 100% free, private, and run in your browser.

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Guides

Step-by-step explanations of common file and calculation tasks — what is actually going on, what the trade-offs are, and which FlexyPdf tool helps.

How to Reduce PDF File Size

Why PDFs get large, when to use lossless clean-up or page-to-JPEG compression, which resolution to pick, and what to try when a PDF will not shrink.

How to resize a photo or signature for an online application form

Get a photo or signature scan to the exact pixel size and KB range an online form asks for: crop, resize, adjust JPEG quality, then check the file.

How to Password Protect a PDF

Open passwords versus permission passwords, which PDF encryption is still safe, how to choose and share a password, and how to remove one from your own file.

JPG vs PNG vs WebP: which image format should you use?

How JPG, PNG and WebP differ: lossy vs lossless, transparency, file size for photos and screenshots, WebP support, SVG for logos and when converting backfires.

How GST is calculated: adding, removing and splitting it

Add GST to a price or take it out of an inclusive one, with worked 5% and 18% examples, the CGST/SGST and IGST split, and how invoices round.

How EMI is calculated: formula, amortisation and total interest

The reducing-balance EMI formula worked through on a ₹20,00,000 loan: why early EMIs are mostly interest, how tenure changes the cost, and flat-rate quotes.

How to fix common JSON errors

Fix invalid JSON: trailing commas, single quotes, comments, NaN, bad escapes, a BOM, duplicate keys and big numbers, plus how to read the error position.

QR codes explained: what they hold, how to print them and how to scan safely

How QR codes work in practice: what they hold, static vs dynamic codes, error correction levels L, M, Q and H, quiet zone, print size, testing and QR phishing.

These guides are drafted with the help of AI writing tools and checked against how the linked FlexyPdf tools actually work. If you spot a mistake, please report it on the contact page.