91 tools
Free online tools
Resize images, work with PDFs, convert colors, calculate marketing metrics, preview social content, clean text, and more—free, instant, and no signup required.
Color Tools
Convert colors between formats for web, print, and design systems.
Color Blindness SimulatorPreview palettes and images under protanopia, deuteranopia, and tritanopia.Color ConverterConvert between HEX, RGB, HSL, HSV, OKLCH, and CMYK with a live preview.Color Palette GeneratorGenerate palettes with a spacebar, lock what you love, and export to CSS, Tailwind, and more.Color WheelExplore color harmonies on interactive RYB and RGB wheels, with contrast and export tools.Contrast CheckerTest text/background pairs against WCAG AA and AAA, with a suggested fix.Shades & Tints GeneratorStepped shade/tint/tone scales from any color, plus a two-color mixer.
Text Tools
Count, clean, convert, and compare text.
Case ConverterNine cases from one box — prose cases and code identifier cases.Character & Word CounterLive character, word, and sentence counts with social platform limits.Find & ReplaceSearch and replace with regex, capture groups, and a live match count.List UtilitiesDedupe, sort, shuffle, reverse, and prefix line lists in one pass.Lorem Ipsum GeneratorPlaceholder text by the paragraph, sentence, or word — plain or HTML.Markdown Table GeneratorVisual grid → markdown table, plus CSV/TSV conversion with quoting support.Readability CheckerFlesch Reading Ease, FK grade level, and reading time for any text.Slug GeneratorTitles to clean URL slugs — accents stripped, length trimmed at word edges.Smart Character CleanerStraighten smart quotes, dashes, ellipses, and invisible spaces from pasted text.Text Diff CheckerSide-by-side paste, line-by-line comparison with word-level highlights.
Links, Codes & Data
Build links, generate codes, and convert data formats.
Add to Calendar GeneratorTurn event details into an .ics file and Google/Outlook links.Barcode GeneratorRetail and logistics barcodes with verified check digits.Contact Link Generatormailto, wa.me, and sms: links with pre-filled messages.CSV Viewer & JSON ConverterPaste CSV/TSV, see a table, get clean JSON.URL & Base64 Encoder/DecoderPercent-encoding and Base64, both directions, Unicode-safe.QR Code GeneratorStatic QR codes that never expire — logo, colors, gradients, and PNG, SVG, or print-ready PDF export.Random Picker WheelA spinning wheel and a pick-N draw, both provably fair.UTM BuilderTag any URL with UTM parameters, with presets and correct encoding.vCard BuilderName, phones, emails, and address into a downloadable .vcf file.WiFi QR Code GeneratorNetwork name + password → a code guests scan to join.
Time & Dates
Plan across timezones and calculate dates and durations.
Countdown TimerA minute timer with presets and fullscreen, or a live countdown to any date.Date CalculatorBusiness days between dates, exact durations, and add-days math.Meeting PlannerFind a meeting time that fits working hours in up to five cities.Presentation TimerEstimate talk length, rehearse with a teleprompter, time your slot.Timesheet CalculatorTotal shift hours with breaks deducted, decimal hours, overtime, and pay.
Marketing Calculators
Work out ad metrics, growth rates, margins, and costs.
A/B Test CalculatorTwo-proportion z-test for results, plus sample-size planning for the next test.Ad Metrics CalculatorCPM, CPC, CPA, CTR, ROAS and ROI from one row of campaign numbers.Break-Even CalculatorBreak-even units and revenue, contribution margin, and target-profit volume.CAC & LTV CalculatorCAC, LTV, the LTV:CAC ratio, and CAC payback in months.Churn & MRR CalculatorMRR movement into growth, churn, NRR, and months to a target.Conversion Rate CalculatorVisitors and conversions into a rate — and what a target rate would take.Engagement Rate CalculatorEngagement rate by followers, reach or impressions, with per-post averages.Freelance Rate CalculatorTarget take-home into the hourly, day, and weekly rate that produces it.Margin & Markup CalculatorSolve cost, price, margin or markup from any two — plus discount impact.Meeting Cost CalculatorAttendees, salaries, and length into the real cost of the meeting.Sales Commission CalculatorFlat, tiered, or quota-with-accelerator commission, shown band by band.
Image Tools
Convert, resize, compress, and edit images in the browser.
DPI ChangerSet the DPI a PNG or JPG declares, and calculate print size in inches, cm, or mm.EXIF ViewerRead camera, exposure, date, and GPS tags — and save a copy with the metadata stripped.Favicon GeneratorOne image to a full favicon set — PNGs, multi-size .ico, and manifest, as a zip.HEIC to JPGTurn iPhone HEIC photos into JPGs everything else can open.Image Color PickerClick a pixel for its hex/RGB/HSL, or extract a dominant palette of 3–8 swatches.Image CompressorHit a file-size budget like "under 1 MB", or compress by quality — batched, in your browser.Image ConverterAny-to-any image conversion with batch and quality control, entirely in your browser.Image CropperDrag a crop selection with aspect presets, rotate 90°, and flip — at full resolution.Image ResizerResize to exact pixels, a percentage, or a platform preset — with aspect lock and batch.Image to Base64Encode an image as a base64 data URI, with HTML and CSS snippets and a size verdict.JPG to PNGMake a lossless PNG copy of a JPG, with the caveats stated plainly.Placeholder Image GeneratorCustom-size placeholder PNGs and SVGs with your colors and label.PNG to JPGShrink PNGs into JPGs, choosing what transparency flattens onto.PNG to SVGTrace a logo or icon into editable SVG paths, with the controls that decide output quality.Redact ImageDrag over names, addresses, or tokens and blur, pixelate, or black them out for good.Sprite Sheet ToolCut a sprite sheet into frames, or pack loose frames into one sheet.SVG ConverterRasterize an SVG to PNG, JPG, or WEBP at any size — re-rendered, not upscaled.Watermark AdderStamp text or a logo across photos — position, opacity, rotation, tiling, in batch.WEBP to PNGTurn a downloaded WEBP into a PNG your software will actually open.
PDF & Document Tools
Convert, merge, and generate PDFs and documents.
Compress PDFShrink a PDF losslessly, or re-render its pages to fit a size budget — with honest numbers.Invoice GeneratorBuild a clean invoice PDF — line items, tax, discounts, your logo. No account, no watermark.JPG to PDFPhotos in, one PDF out — with page size, orientation, margin and fit you control.Markdown to PDFMarkdown in, a typeset PDF out — with real selectable text, not a screenshot.Merge PDFCombine several PDFs into one, in the order you arrange them — in your browser.Organize PDF PagesTurn sideways scans upright, delete pages, and put the rest in order — one screen, one file out.PDF to JPGRender PDF pages to JPG or PNG at a DPI you choose — one page or all of them.PDF to TextPull a PDF’s text out as plain text — and get told plainly when there is none to pull.PPTX Text ExtractorSlide text and speaker notes out of a .pptx, per slide, as text or markdown.Purchase Order GeneratorRaise a PO as a PDF — buyer-issued, with a delivery date and a number the vendor can bill against.Quote GeneratorPrice a job as a quote or estimate PDF — with a validity date and an acceptance block.Split PDFCut a PDF by page ranges, every N pages, or into one file per page.
Web & SEO Tools
Generate and validate the files and markup websites need.
CSS Shadow & Radius GeneratorLayered box-shadows plus per-corner and organic-blob border radius.CSS Gradient GeneratorVisual linear/radial/conic gradient builder with copy-ready CSS.Hreflang Tag GeneratorLocale/URL pairs in, valid hreflang out — with the checks.Meta Tag GeneratorOne form, a complete head block, measured in pixels.Robots.txt Generator & TesterBuild a robots.txt, then test which rule matches a URL.Schema Markup GeneratorForm in, valid JSON-LD out, for the seven common types.SERP Snippet PreviewerPreview a Google result and see where the title and description get cut, measured in pixels.XML Sitemap ValidatorCheck a sitemap against the protocol, line by line.SVG Pattern GeneratorTileable stripes, dots, grids, waves, and noise as CSS or downloadable SVG.Typography Scale CalculatorModular type scales with rem values, line heights, CSS variables, and a unit converter.
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Social Media Tools
Preview, size, and check content for social platforms.