All Online Tools

All free online tools from Gotokit: calculators, developer utilities, document tools, design tools, image tools, timers and more. No signup, forever free.

PDF Convert

8 tools

PDF to Word Converter

Convert PDFs to editable Word documents while preserving paragraphs, tables, and images, and also export Office files to PDF.

PDF Watermark

Add custom text watermarks to PDFs with adjustable font size, color, opacity, rotation, and position. Tile mode for repeating watermarks.

PDF Compressor

Reduce PDF file size with adjustable compression levels while keeping text readable and images usable.

PDF Encrypt and Decrypt

Protect PDFs with AES-256 passwords or remove password protection from files you are allowed to unlock.

Image to PDF Converter

Turn JPG, PNG, WebP, BMP, and GIF images into one PDF with drag-to-reorder, fit modes, page size, and margins.

PDF Merger

Combine multiple PDF files into one document, reorder them visually, and export a merged PDF with a custom filename.

PDF Splitter

Select the PDF pages you want to keep, remove the rest, and export a clean new PDF with page-grid controls.

PDF to Image Converter

Convert every page in a PDF to high-resolution PNG or JPG images with thumbnail preview, ZIP download, and DPI controls.

Image Tools

23 tools

AI Pet Background Remover — Remove & Replace Pet Photo Backgrounds

Free AI-powered pet background remover. Instantly remove backgrounds from cat, dog & pet photos. Get transparent PNG or replace with colors, gradients & scenes. No signup required.

Image to Base64 Converter

Convert images to Base64, Data URI, CSS, HTML, or JSON output in your browser, with optional compression for smaller results.

Base64 Encoder and Decoder

Encode or decode text and files as Base64 locally in your browser, with image preview and quick copy tools.

Online Vector SVG/DXF/EPS Format Converter

Free online vector format converter. Convert between SVG, DXF, and EPS in any direction — all processing done locally in your browser.

Code to Image Generator

Turn code snippets into clean, shareable images with theme, font, line number, and padding controls, then export high-quality PNGs.

Image to Text OCR

Extract text from images in more than 100 languages with browser-based OCR powered by Tesseract.js.

Simple Image to Text OCR

Upload an image, choose a language, and extract copyable plain text in seconds with a minimal OCR workflow.

Receipt and Invoice OCR

Extract structured text from receipts, invoices, and tickets, including dates, amounts, sellers, and detected document type.

App Icon Generator

Generate app icon sets for iOS, Android, macOS, watchOS, and more from one source image, then download PNG bundles.

Image Format Converter

Convert JPG, PNG, WebP, BMP, and GIF files both ways in your browser using drag and drop, paste, or file upload.

Online Image Denoiser - Remove Noise, Enhance Quality

Remove noise from images with bilateral, median, and Gaussian filters. Edge-preserving denoising runs entirely in your browser.

Image Color Adjuster - Brightness, Contrast, Saturation & Filters

Adjust image brightness, contrast, and saturation, then apply one-tap filters. 100% local processing in your browser.

Image Compressor

Compress JPG, PNG, and WebP images locally with quality and resize controls inspired by desktop-grade tools.

Image Watermark Tool

Add text or image watermarks to photos with controls for font, color, opacity, position, tiling, and output.

AI Watermark Remover

Remove logos, subtitles, and common watermarks automatically with AI, without manual brushing or masking.

Product Background Remover

Remove backgrounds from product photos automatically and export clean transparent PNGs for listings, catalogs, and ads.

Portrait Background Remover

Remove portrait backgrounds automatically with AI human segmentation and export transparent PNGs in standard or HD mode.

Chinese ID Card Recognition

Upload Chinese ID card images to auto-extract name, ID number, birth date, gender, ethnicity, and address. Aliyun OCR with high accuracy. Images auto-deleted.

ID Photo Maker

Turn a front-facing portrait into a printable ID photo with background replacement, standard photo sizes, and 6-inch print-sheet output.

Image to Favicon Generator

Create a multi-size favicon.ico plus PNG favicon files from one image, along with a ready-to-paste HTML snippet.

AI Image Upscaler

Upscale images 1x to 4x with AI super-resolution to recover detail, sharpen edges, and reduce visible noise.

Document Scanner and Rectifier

Flatten and clean up document photos with perspective correction, smart or manual edge selection, and scan-style enhancement.

Batch Image Resizer — Resize Multiple Images Online

Free online batch image resizer: upload multiple images at once, set custom width/height or scale by ratio. Local processing, no upload, no login. Export JPG/PNG/WebP and download as a single ZIP.

Astrology

4 tools

Natal Chart Calculator

Generate a birth chart from date, time, and location, including the wheel chart, ASC and MC points, and major planetary positions.

Numerology Calculator

Free Pythagorean numerology calculator. Enter your name and birth date to get your Life Path, Destiny, Soul Urge, Personality and Personal Year numbers.

Synastry Compatibility Calculator

Compare two birth charts with compatibility scores, dual-chart views, and radar-style relationship insights.

AI Daily Horoscope

Generate a daily horoscope from natal chart data, with uplifting guidance across general, career, and relationship themes.

Text Tools

5 tools

Charts that look hand-sketched: bars, horizontal bars, pies and donuts are drawn with roughViz.js irregular jittery strokes, like a quick sketch on a whiteboard that still keeps true proportions. Paste 2 to 12 rows of data and export crisp SVGs for sketch-style slides, prototypes and editorial graphics.

Markdown Editor

Write Markdown with live preview, GitHub-flavored formatting, and one-click export to Markdown or HTML.

Text Case Converter

Convert text to sentence case, title case, UPPERCASE, lowercase, camelCase, and more, then copy or export the result.

List Sorter

Sort text and numbers online with alphabetic, numeric, natural, and length modes. Dedup, delimiter, column sort, export to CSV/TXT/JSON.

AI Title Generator — Blog, YouTube & Social Media

Generate catchy, SEO-friendly titles for blogs, YouTube videos, and social media with AI. Pick a platform and tone, get optimized titles with quality scores instantly.

Design

27 tools

Pantone Color Picker

Pick any color and find the nearest Pantone reference instantly, with ready-to-copy HEX and RGB values for design and print workflows.

Color Wheel Studio

Explore colors with an interactive wheel, fine-tune HEX, RGB, HSL, and HSV values, and save palettes directly in your browser.

Color Scheme Generator

Generate color schemes from a base color using 7 harmony rules with live UI preview and export to HEX, Tailwind, or CSS variables.

Pantone + CMYK + RGB Print Palette

Professional print palette with 150+ Pantone swatches, 2-5 color combos, auto Pantone matching, real-time CMYK, and simulated coated-paper preview.

Gradient Art Generator

Create layered radial-gradient artwork with blend modes, random presets, and copy-ready CSS for modern backgrounds and hero sections.

Chord Diagram Generator - Free Online Circular Chart Maker

Read pair-wise relationships with a circular chord diagram: nodes ring the circle, arc length shows each node’s total flow, and ribbon width plus color encodes how strongly any two nodes connect. Made for migration, trade, calls or citations, with three color themes and PNG / SVG export.

Elegant Date Ring Bubble Chart

Map a full year of events onto a concentric date ring — months on the outer circle and days aligned inward — so each event floats as a soft gradient bubble over its own calendar cell. Sparse days and crowded holidays reveal themselves instantly in a refined, low-saturation palette with light / dark canvas and PNG / SVG export.

Dual Gradient No. 1 Nightingale Rose Chart

A Nightingale rose whose petals sweep outward in a symmetric ring, each one brushed with a two-tone gradient instead of a flat color. An optional year label sits at the center of the chart, and light / dark canvas styles come with PNG / SVG export.

Poster Two-Column Sankey Diagram Generator

A poster-grade two-column Sankey: left-side nodes take vivid colors while right-side nodes are shaded in weight-based grays, and every flow band carries its own name, value and share. The clean two-column layout is ready to drop into a poster, with light / dark canvas styles and PNG / SVG export.

Streamgraph Generator - Free Online River Chart Maker

A smooth streamgraph where every series stacks symmetrically around a baseline that sways with time, the stacked shapes undulating like shifting river channels. Ideal for comparing how the parts of a whole change together over the years; supports 2 to 16 series and 3 to 40 rows, with light / dark canvas and PNG / SVG export.

Morandi Streamgraph Generator - Free Online River Chart Maker

A streamgraph dressed in a Morandi blue-to-pink palette: low-saturation navy, blue-gray and dusty rose keep the layered river calm and easy on the eye, thin white seams separate every layer, and a top legend keys colors to series. For stacked trend views that still feel refined, with light / dark canvas and PNG / SVG export.

Error Band Chart Generator - Free Online Confidence Band Maker

A continuous error band chart: instead of a fixed shadow under the main line, a band hugs the line and changes width point by point, swelling in volatile periods and thinning in calm ones, so trend and uncertainty live in one frame. Classic off-white, rainbow and Morandi themes with light / dark canvas and PNG / SVG export.

Line Bubble Chart Generator - Free Online Log-Scale Bubble Chart Maker

A curved-stem bubble chart for timelines: each event sits on a year axis, a thin stem bows rightward off the bottom spine and lifts a translucent bubble, and a logarithmic Y axis keeps values across orders of magnitude (0.7 to 14) comparable in one frame while bubble size maps by square root. Five category colors, light / dark canvas and PNG / SVG export.

Morph Bubble Zoning Diagram Generator - Free Online Organic Bubble Diagram Maker

A Morph Bubble Zoning Diagram where child nodes fuse into their hub with Metaball surfaces instead of floating detached, labels run along each node’s outer arc, dashed links connect the bubbles, and a teal-to-green four-color palette keeps the cluster calm. Made for hub-and-member structures; light / dark canvas and PNG / SVG export included.

Scallop Chord Diagram Generator - Free Online Bipartite Chord Diagram Maker

A scallop-shaped bipartite chord diagram: group arcs along the bottom are weighted by total flow into unequal scallops, target nodes fan across the top in equal-width arcs, and the flows between them become thin ribbons bending along center-crossing Bézier curves, with radial labels that never tangle. Built for few-groups-to-many-targets bipartite data; light / dark canvas and PNG / SVG export.

Annotated Heatmap Generator - Free Online Table Heatmap Maker

A table heatmap that keeps the numbers legible: every cell is both color-filled and labeled with its value, a diverging scale stretches from zero toward positive and negative extremes, and a vertical ticked color bar sits on the right. Themes for classic, rainbow and Morandi looks, light / dark canvas, PNG / SVG export.

Grouped Bar Chart with Error Bars Generator - Free Online Chart Maker

A grouped bar chart with error bars in the restrained academic style: two pastel-colored bars side by side, black I-shaped error bars on top, a full black axis frame and x labels rotated 45 degrees — a faithful reproduction of a paper-ready figure. Built for experimental group comparisons, with light / dark canvas and PNG / SVG export.

Ridgeline Plot Generator - Free Online Joy Plot Chart Maker

A ridgeline (joy) plot that stacks several distributions along their own horizontal baselines, peaks rising smooth and never overlapping, with a series name on the left of each row and a dot legend beneath — ideal for comparing the peaks and spread of many groups side by side. Up to 6 series and 400 rows, with light / dark canvas and PNG / SVG export.

Radial Stacked Bar Chart Generator - Free Online Circular Bar Plot Maker

A radial stacked bar chart (racetrack / circular bar plot) where each row of data becomes one concentric ring, split into stacked category arcs whose lengths stay proportional to the ring total — like laps of a track labelling each year’s composition. An italic total sits just beyond every arc end and a vertical square-marker legend keys the colors; light / dark canvas and PNG / SVG export included.

Four-Stage Decision Sankey Diagram Generator

A four-column Sankey that renders the whole funnel at once — origin, destination, decision, then breakdown by origin. Volume layers in from the left, the right side splits it into accepted-versus-rejected comparison bars per source, and a year badge plus three palettes complete the academic poster look for review, approval or admission flows.

Triangular Distribution Matrix Heatmap Generator

Lay out a frequency matrix — how many days each category spends in every value bin — as a stepped triangular heatmap. Cell color encodes frequency while IQR ranges, median dots and mean crosses are drawn automatically, revealing skew and spread at a glance. Three palettes, light / dark canvas and PNG / SVG export.

Circos Gradient Ribbon Chord Diagram Generator

A Circos-style chord diagram split into warm and cold camps: warm nodes and cold nodes each form a continuous arc, and the link between them becomes a ribbon that gradients from one end’s color to the other’s. Whole-camp flows are legible at a glance for matrices such as genomics, networks or ecology; dark mode and PNG / SVG export included.

Bubble Chord Diagram Generator - Circular Collaboration Network

A bubble chord diagram places paired relationships around one big circle: each node is a bubble whose size shows the node scale and whose fill walks an aqua-to-blue colormap for strength; links bow toward the center with thickness proportional to the flow value, while node names radiate outside the ring. Built for collaboration networks, supply-chain dependencies and inter-team flows where each node also carries metrics, still legible around 30 nodes; dark mode and PNG / SVG export.

Radial Arc Flow Diagram Generator

A radial arc flow diagram for country-to-organization flows: a top arch is segmented by region with country ticks along the arc, and curves stream down from each tick into organization nodes sized by total volume. Built for global trade, aid or migration narratives, with dark mode and PNG / SVG export.

Arc Diagram Generator

A classic arc diagram that flattens co-occurrence onto one baseline: colored group ticks sit on the line, vertical group-colored labels stand at the left, and relationship strength is drawn as semi-transparent semicircle arcs whose height and thickness vary with the weight — clean even at 400 relations. Great for timelines and ranked pairings; dark mode and PNG / SVG export.

Grouped-Color Rose Chart Generator

Turn category, value and group columns into a Nightingale rose where every petal takes the color of its group, hues flowing smoothly from one segment to the next. Includes a label toggle, light / dark canvas styles and PNG / SVG export, all rendered locally.

Excalidraw Whiteboard

Use a hand-drawn online whiteboard for flowcharts, sketches, wireframes, and annotations with local editing and export.

Media

6 tools

Free M3U8 Online Player - One-Click Instant Streaming

Play M3U8 and HLS streams in your browser with quality switching, playlist inspection, and quick testing tools for both live and on-demand video.

Artistic QR Code Generator

Design branded QR codes with custom dots, corners, logos, colors, transparent backgrounds, and PNG or SVG export.

QR Code Generator

Generate clean QR codes from text or URLs with size, color, corner radius, and error-correction controls.

Random Lottery Picker

Run a browser-based prize draw with custom prizes, participant lists, winner counts, local history, and exportable results.

Rolling Number Lottery

Create animated three-digit number draws with acceleration and staged slowdown for live events, raffles, and big-screen reveals.

Spin the Wheel Random Picker

Free online spinning wheel for giveaways and random picks. Custom entries, fullscreen mode, Morandi colors, sound effects, shareable links. No sign-up.

Calculators

9 tools

Loan Calculator

Estimate payments for amortized loans, deferred-payment loans, and simple bond scenarios with clear cost breakdowns and repayment schedules.

Tip Calculator

Free online tip calculator with multi-currency support, bill splitting, and rounding options. Essential for travelers and group dining.

Mortgage Calculator

Calculate monthly mortgage payments, total interest, and amortization schedules from home price, down payment, interest rate, and loan term.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Live clock with real-time seconds and milliseconds, copy with one click.

Scientific Calculator

Use a fast browser-based scientific calculator for arithmetic, trigonometry, powers, parentheses, and keyboard input.

Income Tax Calculator

Estimate annual personal income tax for major countries with country presets and clear bracket-by-bracket breakdowns.

BMI Calculator

Calculate body mass index with metric or imperial units and see your BMI category plus a healthy weight range in real time.

Unit Converter

Convert length, weight, temperature, volume, area, time, and currency values instantly with metric and imperial unit support.

3D Rotation Converter — Euler, Quaternion, Matrix & Axis-Angle

Real-time bidirectional conversion between Euler angles, quaternions, rotation matrices, and axis-angle. All 12 rotation orders with 3D preview.

Developer

11 tools

Secure Password Generator

Generate strong random passwords locally with length controls, character set options, exclusions, and instant strength feedback.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and HMAC hashes from text or files entirely in your browser.

MD5 Generator and Checker

Generate MD5 hashes, compare two MD5 results, and create random passwords with instant MD5 output in one simple browser tool.

JSON Formatter and Validator

Format, validate, repair, search, and inspect JSON in a cleaner editor built for developers, APIs, and configuration files.

YAML and JSON Converter

Convert YAML and JSON both ways with validation, copy, download, and clearer error feedback for config and API work.

XML Formatter, Minifier & Validator

Format, minify and validate XML online. Pretty-print with configurable indent, sort attributes, collapse empty elements. All client-side, zero data upload.

URL Encoder and Decoder

Free online URL encoder & decoder with batch processing, encodeURI/encodeURIComponent dual modes, space handling, and auto-detect. All local, zero data upload.

Robots.txt Generator

Free online robots.txt generator with crawler presets, visual Allow/Disallow rules, sitemap support, live validation, and one-click download. Runs locally.

XML Sitemap Generator

Free online XML sitemap generator. Paste a URL list to build a standard sitemap.xml with lastmod/changefreq/priority batch settings, URL dedupe and validation, CSV/TSV/existing-sitemap import, and automatic sitemapindex splitting over 50,000 URLs. Runs fully in your browser.

Regex Tester

Test regular expressions in real time with live matches, highlighting, explanations, and reusable test cases.

Cron Expression Generator & Parser - Build Schedule Expressions

Free online cron expression generator and parser. Build schedule expressions visually with instant human-readable descriptions and next run time preview.

Timers

3 tools