All Tools
115 free online utilities. Most run in your browser, and you can try them without an account.
Available now
- LLM Token Analyzer & Prompt OptimizerCount tokens, estimate API usage, optimize prompts, and discover ways to reduce unnecessary token consumption.PopularLLM Tools
- LLM Cost CalculatorEstimate and compare AI API costs based on tokens, usage, and model pricing.PopularLLM Tools
- Context Window CheckerCheck prompt size against a model context window.PopularLLM Tools
- Document Similarity CheckerCompare two documents for overlapping passages.LLM Tools
- JSON FormatterPretty-print JSON locally.PopularDeveloper Tools
- JSON ValidatorValidate JSON syntax and get clear error messages.Developer Tools
- Base64 Encoder / DecoderEncode and decode Base64 in the browser.Developer Tools
- URL Encoder / DecoderPercent-encode or decode URLs and query strings.Developer Tools
- UUID GeneratorGenerate cryptographically random UUIDs in the browser.Developer Tools
- Regex TesterTest regular expressions and see all matches and groups.Developer Tools
- Unix Timestamp ConverterConvert Unix timestamps to dates and back.Developer Tools
- Percentage CalculatorCalculate percentages, ratios, and percentage change.Calculators
- Age CalculatorCalculate exact age from a date of birth.Calculators
- Compound Interest CalculatorProject investment growth with compound interest.Calculators
- Password GeneratorGenerate secure random passwords in the browser.PopularGenerators
- JSON MinifyMinify JSON to a compact single line.Developer Tools
- JSON to One LineConvert JSON to a single line.Developer Tools
- JSON SorterSort JSON keys alphabetically.Developer Tools
- JSON CompareDiff two JSON documents side by side.Developer Tools
- JSON Stringify OnlineStringify JSON — wrap in JSON.stringify.Developer Tools
- JSON to CSVConvert JSON array to CSV.Converters
- JSON to XMLConvert JSON to XML format.Converters
- JSON to YAMLConvert JSON to YAML.Converters
- CSV to JSONConvert CSV to JSON array.Converters
- XML to JSONConvert XML to JSON format.Converters
- YAML to JSONConvert YAML to JSON.Converters
- HTML Escape / UnescapeEscape or unescape HTML entities.Developer Tools
- XML Escape / UnescapeEscape or unescape XML characters.Developer Tools
- JSON Escape / UnescapeEscape or unescape JSON string characters.Developer Tools
- Javascript Escape / UnescapeEscape or unescape JavaScript strings.Developer Tools
- CSV Escape / UnescapeEscape or unescape CSV cell values.Developer Tools
- SQL Escape / UnescapeEscape or unescape SQL string values.Developer Tools
- Base64 to JSONDecode Base64 then parse as JSON.Converters
- JSON to Base64Encode JSON as Base64.Converters
- HTML FormatterFormat and beautify HTML.Developer Tools
- JavaScript FormatterFormat and beautify JavaScript.Developer Tools
- CSS MinifyMinify and compact CSS.Developer Tools
- CSS FormatterFormat and beautify CSS.Developer Tools
- QR Code GeneratorGenerate QR codes from text or URL.PopularGenerators
- Image CompressorCompress JPG, PNG and WebP images online.PopularImage Tools
- Image ResizerResize images by pixels or percentage online.PopularImage Tools
- Image Resolution CheckerCheck image dimensions, megapixels, aspect ratio and format.Image Tools
- JPG to PNGConvert JPG to PNG online.Image Tools
- JPG to WebPConvert JPG to WebP for smaller file sizes.Image Tools
- PNG to JPGConvert PNG to JPG with background colour selection.Image Tools
- PNG to WebPConvert PNG to WebP with transparency support.Image Tools
- WebP to JPGConvert WebP to JPG online.Image Tools
- WebP to PNGConvert WebP to PNG with transparency preserved.Image Tools
- Image Rotator & FlipperRotate and flip images online.Image Tools
- Image CropperCrop images with custom or preset aspect ratios.Image Tools
- PDF to TextExtract text from PDF files in the browser.PopularPDF & Docs
- Text to PDFConvert plain text to a downloadable PDF.PDF & Docs
- JPG to PDFConvert JPG images to PDF in the browser.PDF & Docs
- PNG to PDFConvert PNG images to PDF in the browser.PDF & Docs
- Images to PDFCombine multiple images into a single PDF.PopularPDF & Docs
- Merge PDFMerge multiple PDFs into one file.PopularPDF & Docs
- Split PDFExtract pages or ranges from a PDF.PDF & Docs
- Compress PDFReduce PDF file size in the browser.PDF & Docs
- Word to PDFConvert Word documents to PDF.PDF & Docs
- PDF to WordConvert PDF to editable Word document.PDF & Docs
- Remove PagesDelete specific pages from a PDF.PDF & Docs
- Extract PagesPull specific pages into a new PDF.PDF & Docs
- Rotate PDFRotate all pages of a PDF.PDF & Docs
- Add Page NumbersAdd page numbers to a PDF.PDF & Docs
- Add WatermarkAdd a text watermark to a PDF.PDF & Docs
- Repair PDFAttempt to fix a damaged PDF file.PDF & Docs
- PDF FormsFill out a fillable PDF form.PDF & Docs
- PDF to MarkdownConvert a PDF to Markdown.PDF & Docs
- Organize PDFReorder, rotate and delete PDF pages visually.PDF & Docs
- Crop PDFCrop the margins or area of a PDF's pages.PDF & Docs
- Scan to PDFTurn photos of documents into a PDF.PDF & Docs
- PDF to JPGConvert PDF pages to JPG images.PDF & Docs
- Sign PDFAdd a visual signature to a PDF.PDF & Docs
- Compare PDFCompare two PDFs and see what changed.PDF & Docs
- HTML to PDFConvert HTML to PDF.PDF & Docs
- Excel to PDFConvert spreadsheets to PDF.PDF & Docs
- PowerPoint to PDFExtract slide text into a PDF (design and images are not preserved).PDF & Docs
- PDF to PowerPointConvert PDF pages to PowerPoint slides.PDF & Docs
- PDF to ExcelExtract PDF text into a spreadsheet.PDF & Docs
- OCR PDFExtract text from a scanned PDF.PDF & Docs
- Unlock PDFRemove a PDF's password and restrictions.PDF & Docs
- Protect PDFAdd password encryption to a PDF.PDF & Docs
- Add PDF/A MetadataAdd the PDF/A-1b declaration to a PDF's metadata (not a validated conversion).PDF & Docs
- Redact PDFPermanently remove sensitive text from a PDF.PDF & Docs
- AI SummarizerSummarize a PDF with AI.PDF & Docs
- Translate PDFTranslate a PDF's text with AI.PDF & Docs
- Meta Tag GeneratorGenerate HTML meta tags, Open Graph and Twitter/X Card tags.PopularSEO
- SERP PreviewPreview your page in desktop and mobile search results.PopularSEO
- Open Graph GeneratorGenerate og: meta tags with social preview.SEO
- Twitter/X Card GeneratorGenerate Twitter/X Card meta tags with preview.SEO
- Robots.txt GeneratorGenerate a robots.txt file with a form-based builder.SEO
- XML Sitemap GeneratorGenerate an XML sitemap from a list of URLs.SEO
- Canonical URL GeneratorGenerate a canonical <link> tag for any URL.SEO
- Schema Markup GeneratorGenerate JSON-LD structured data for multiple schema types.PopularSEO
- FAQ Schema GeneratorGenerate FAQPage JSON-LD from a list of Q&A pairs.SEO
- Article Schema GeneratorGenerate Article JSON-LD for blog posts and news articles.SEO
- Word CounterCount words, characters, sentences and get reading time.PopularSEO
- Keyword Density CheckerCheck keyword density and top phrases in your content.SEO
- SEO Slug GeneratorConvert titles into clean, SEO-friendly URL slugs.SEO
- HTTP Status CheckerCheck HTTP status codes and redirect chains.SEO
- Redirect CheckerTrace redirect chains for any URL.SEO
- Website SEO CheckerFree SEO audit tool — analyze any website's technical and on-page SEO.PopularSEO
- Full Site AuditAudit a page plus a few of its internal pages at once.SEO
- AI Image Enhancer & UpscalerEnhance quality, reduce noise, sharpen details and upscale your images.PopularAI Tools
- Email Signature GeneratorBuild a professional HTML email signature with photo, logo, socials and a CTA.Generators
- Watermark RemoverPaint over a visible watermark to remove it using inpainting.AI Tools
- Object RemoverPaint over an unwanted object to remove it from a photo.AI Tools
- Background RemoverAutomatically remove an image's background with AI segmentation.PopularAI Tools
- Image Provenance CheckerCheck an image for embedded C2PA / Content Credentials data.AI Tools
- C2PA / Content Credentials ViewerInspect the full technical C2PA manifest embedded in an image.AI Tools
- Plagiarism CheckerCompare two documents for potentially matching content.PopularAI Tools
- Advanced Similarity CheckerCompare two texts by lexical overlap and semantic meaning.AI Tools
- AI RewriterRewrite text in a professional, clear, concise, or other style.AI Tools
- AI ParaphraserRephrase text at light, moderate, or strong intensity.AI Tools
- AI Content OptimizerAnalyze content for readability, structure, and topic coverage.AI Tools