Free online tools that run in your browser

PDF, image, QR code, calculator and developer tools. No sign-up, no watermarks, and your files never leave your device.

PDF Tools

Merge PDFCombine several PDF files into one document. Reorder them, then download.Split PDFExtract a page range into a new PDF, or split every page into its own file.Compress PDFShrink scanned or image-heavy PDFs by re-encoding each page as an optimized imagPDF to JPGTurn every page of a PDF into a high-quality JPG or PNG image.JPG to PDFCombine photos and screenshots into a single PDF, one image per page.Watermark PDFStamp a text watermark such as CONFIDENTIAL or DRAFT across every page.

Image Tools

Compress ImageMake photos smaller for websites, email and upload forms without visible qualityImage ConverterConvert images between JPG, PNG and WebP in one click.Resize ImageChange image dimensions by pixels or percentage, keeping the aspect ratio.Passport & ID Photo MakerCrop and resize a photo to official passport, visa and ID sizes, with a clean baWatermark ImageProtect your photos with a text watermark, single or tiled.Image Grid SplitterCut one image into a 3×3, 2×2 or custom grid for Instagram and social posts.

QR & Barcode

QR Code GeneratorCreate static QR codes that never expire for links, Wi-Fi, text, email and phoneBarcode GeneratorGenerate Code 128, EAN-13, UPC-A, Code 39 and ITF barcodes as PNG or SVG.

Calculators

Loan CalculatorWork out your monthly payment, total interest and full amortization schedule.BMI CalculatorCalculate your Body Mass Index in metric or imperial units and see your categoryDate CalculatorCount the days between two dates, or add and subtract days, weeks and months.Profit Margin CalculatorFind gross margin, markup and profit, or the selling price you need for a targetPercentage CalculatorThree everyday percentage questions, answered instantly.Unit ConverterConvert length, weight, temperature, area, volume, speed and data units.

Developer & Webmaster

JSON FormatterBeautify, minify and validate JSON with clear error positions.Regex TesterTest JavaScript regular expressions with live highlighting, capture groups and rUnix Timestamp ConverterConvert Unix epoch time to a readable date and back, in seconds or milliseconds.Base64 Encode / DecodeEncode and decode Base64 text (UTF-8 safe), URL-safe Base64, and files to data UUUID GeneratorGenerate cryptographically random version-4 UUIDs, one or thousands at a time.DNS LookupQuery A, AAAA, CNAME, MX, TXT, NS, CAA and SOA records for any domain.WHOIS LookupSee when a domain was registered, when it expires, its registrar, status and namRobots.txt GeneratorBuild a correct robots.txt in seconds, including rules for AI crawlers like GPTBllms.txt GeneratorCreate an llms.txt file that tells AI assistants what your site is about and whiWord CounterCount words, characters, sentences, paragraphs and reading time as you type. Wor

Why Kitly Hub?

Private by design. Files are processed locally with JavaScript, so nothing is uploaded to a server. Fast. No queues and no waiting for uploads. Free. Every tool is free to use, supported by unobtrusive ads.