Calculators, developer utilities, PDF converters, design helpers and AI-powered tools — all in one clean, fast place. Just open and use.
Recently added tools.
Upload a CSV to build a dual log-axis bubble scatter: bubble area encodes a third variable, colors follow your groups, and a dashed y=x line with R² / P / n annotations is added automatically. PNG and SVG export included.
Recreate the reference style with fan-shaped sources, slanted event bars and curved character arcs. Map influence to ribbon width and export CSV-driven PNG or SVG charts.
Chain situation type → scene → character into one influence-flow diagram: ribbon width is the value itself, so the thicker the scene the bigger its pull on the outcome. Right-column nodes inherit the colour of their largest source category, and the bottom legend reads your own CSV node names — swap in your data and the whole chart re-skins instantly. Includes in-chart title and caption, light / dark canvas and PNG / SVG export.
A standard left-to-right layered dual-tone budget Sankey built on the ECharts sankey layout: the revenue side converges in cyan from the left, passes through the central pivot bar that fades from cyan to magenta, and the expenditure side then diverges to the right in magenta. Within each family, nodes are ranked by throughput across seven shades of light and dark — darker and thicker means larger, while pale slivers that thin to a line are the smallest items. Labels are tiered by column with automatic collision avoidance. Three dual-tone palettes, light / dark canvas and PNG / SVG export.
Render a two-column metabolite → pathway enrichment Sankey plus a matching right bubble panel in one chart. Ribbons use one flat light-gray tone at ~0.6 opacity so overlaps darken; every label sits to the left of its bar, right-aligned and vertically centered with no pill; ~50 pastel metabolites feed 11 gem-toned pathways; the bubble panel aligns row-by-row, x = -Log(Pvalue), area = Count, red shade = Hit Ratio. Light / dark canvas and PNG / SVG export.
A free-depth energy flow Sankey that renders energy sources → conversion carriers → end uses in one chart, in UK DECC style. Every node takes an earthy multi-hue color, ribbons blend a source-to-target gradient at ~0.2 low opacity, and all node labels sit to the right of their bars with no background. Three palettes, light / dark canvas and PNG / SVG export.
A five-stage Sankey that renders source → transit → hub → channel → destination in one chart. Every node takes its own pastel color, ribbons blend a source-to-target gradient at low opacity, and slim nodes carry white pill labels on the inner columns. Three soft palettes, light / dark canvas and PNG / SVG export.
Generate a circular evidence network from independently entered patient totals and pairwise study counts in CSV. Node area shows patients and curve width shows studies, with local processing, light/dark mode and PNG/SVG export. No statistical analysis.
Turns a pairwise relationship matrix into a spectral ring: nodes run clockwise from the largest total to the smallest, arc colors are sampled along one continuous ramp so hue is the ranking itself (reddest biggest, bluest smallest), every relationship is a uniform thin teal line bending toward the centre, and white dividers inside an arc are that node’s connection list. Dark mode and PNG / SVG export included.
Draws “many sources into a few groups” as one ring: the left half holds small source arcs in a single purple, the right half holds group arcs one colour each with a matching vertical legend, arc width equals node totals, and ribbons are tinted by their target group. White dividers inside group arcs show at a glance how many sources feed each one. Built for sample classification, channel attribution, topic assignment and batch destinations, with dark mode and PNG / SVG export.
A Circos collinearity chord diagram treats ring segments as continuous coordinate tracks instead of discrete nodes: outer ticks show positions and thin curves in the center map one interval to another. Built for genome synteny, block migration, address-range remapping, batch reassignment and stratigraphic comparison, with light/dark mode and PNG / SVG export.
A double-fan colorful chord diagram turns bipartite flows into an hourglass: five solid-colored arcs fan across the top and five pastel arcs fan across the bottom along one circle, with open gaps at 3 and 9 o’clock. Translucent colored ribbons cross the center waist, and every sector carries its own tick axis starting at 0 with majors every 10 units. Built for channel flows, cost allocation and requirement coverage; dark mode and PNG / SVG export.
Our growing focus: online tools that combine everyday utility with AI. Free and no login, of course.
AI
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.
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Extract text from images in more than 100 languages with browser-based OCR powered by Tesseract.js.
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Upload an image, choose a language, and extract copyable plain text in seconds with a minimal OCR workflow.
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Extract structured text from receipts, invoices, and tickets, including dates, amounts, sellers, and detected document type.
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Remove noise from images with bilateral, median, and Gaussian filters. Edge-preserving denoising runs entirely in your browser.
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Add text or image watermarks to photos with controls for font, color, opacity, position, tiling, and output.
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Remove logos, subtitles, and common watermarks automatically with AI, without manual brushing or masking.
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Remove backgrounds from product photos automatically and export clean transparent PNGs for listings, catalogs, and ads.
9 categories covering everything from math to media.
PDF to Word Converter · PDF Watermark · PDF Compressor
AI Pet Background Remover — Remove & Replace Pet Photo Backgrounds · Image to Base64 Converter · Base64 Encoder and Decoder
Natal Chart Calculator · Numerology Calculator · Synastry Compatibility Calculator
Sketch-Style Chart Generator · Markdown Editor · Text Case Converter
Circular Evidence Network Plot Generator · Pantone Color Picker · Color Wheel Studio
Free M3U8 Online Player - One-Click Instant Streaming · Artistic QR Code Generator · QR Code Generator
Loan Calculator · Tip Calculator · Mortgage Calculator
Secure Password Generator · Hash Generator · MD5 Generator and Checker
Countdown Timer · 3D Flip Clock · Schedule Calendar
Convert PDFs to editable Word documents while preserving paragraphs, tables, and images, and also export Office files to PDF.
Add custom text watermarks to PDFs with adjustable font size, color, opacity, rotation, and position. Tile mode for repeating watermarks.
Reduce PDF file size with adjustable compression levels while keeping text readable and images usable.
Protect PDFs with AES-256 passwords or remove password protection from files you are allowed to unlock.
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.
Convert images to Base64, Data URI, CSS, HTML, or JSON output in your browser, with optional compression for smaller results.
Encode or decode text and files as Base64 locally in your browser, with image preview and quick copy tools.
Free online vector format converter. Convert between SVG, DXF, and EPS in any direction — all processing done locally in your browser.
Generate a birth chart from date, time, and location, including the wheel chart, ASC and MC points, and major planetary positions.
Free Pythagorean numerology calculator. Enter your name and birth date to get your Life Path, Destiny, Soul Urge, Personality and Personal Year numbers.
Compare two birth charts with compatibility scores, dual-chart views, and radar-style relationship insights.
Generate a daily horoscope from natal chart data, with uplifting guidance across general, career, and relationship themes.
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.
Write Markdown with live preview, GitHub-flavored formatting, and one-click export to Markdown or HTML.
Convert text to sentence case, title case, UPPERCASE, lowercase, camelCase, and more, then copy or export the result.
Sort text and numbers online with alphabetic, numeric, natural, and length modes. Dedup, delimiter, column sort, export to CSV/TXT/JSON.
Generate a circular evidence network from independently entered patient totals and pairwise study counts in CSV. Node area shows patients and curve width shows studies, with local processing, light/dark mode and PNG/SVG export. No statistical analysis.
Pick any color and find the nearest Pantone reference instantly, with ready-to-copy HEX and RGB values for design and print workflows.
Explore colors with an interactive wheel, fine-tune HEX, RGB, HSL, and HSV values, and save palettes directly in your browser.
Generate color schemes from a base color using 7 harmony rules with live UI preview and export to HEX, Tailwind, or CSS variables.
Play M3U8 and HLS streams in your browser with quality switching, playlist inspection, and quick testing tools for both live and on-demand video.
Design branded QR codes with custom dots, corners, logos, colors, transparent backgrounds, and PNG or SVG export.
Generate clean QR codes from text or URLs with size, color, corner radius, and error-correction controls.
Run a browser-based prize draw with custom prizes, participant lists, winner counts, local history, and exportable results.
Estimate payments for amortized loans, deferred-payment loans, and simple bond scenarios with clear cost breakdowns and repayment schedules.
Free online tip calculator with multi-currency support, bill splitting, and rounding options. Essential for travelers and group dining.
Calculate monthly mortgage payments, total interest, and amortization schedules from home price, down payment, interest rate, and loan term.
Convert Unix timestamps to human-readable dates and vice versa. Live clock with real-time seconds and milliseconds, copy with one click.
Generate strong random passwords locally with length controls, character set options, exclusions, and instant strength feedback.
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and HMAC hashes from text or files entirely in your browser.
Generate MD5 hashes, compare two MD5 results, and create random passwords with instant MD5 output in one simple browser tool.
Format, validate, repair, search, and inspect JSON in a cleaner editor built for developers, APIs, and configuration files.
Run a precise countdown by target date or custom duration, with pause, resume, shareable links, and end-of-timer alerts.
Display a polished 3D flip clock, stopwatch, or countdown timer for streams, events, dashboards, kiosks, and large-screen displays.
Manage events in a local-first monthly calendar with seven tags, image export, fullscreen mode, favorites, and share links.
