What's New

Convert Unix timestamps to dates and back — seconds, milliseconds, or microseconds

Convert any image to a Base64 data URI with ready-to-paste CSS and HTML

Compare two JSON documents and see exactly what changed

Format and beautify SQL in 10 dialects — instantly and privately

View and strip hidden EXIF & GPS data from your photos

Convert iPhone HEIC photos to JPG or PNG — batch, in your browser

Draw, type, or upload a signature and place it on any PDF

Remove duplicate rows, trim whitespace, and clean up any CSV

Estimate your after-tax 401(k) space for the Mega Backdoor Roth strategy

Estimate the Alternative Minimum Tax on an ISO exercise — with the AMT crossover

See your bonus take-home — supplemental withholding, FICA, and the shortfall vs your real rate

Compare W-2 employment vs 1099 contracting take-home — SE tax, QBI, benefits

See if refinancing your mortgage actually saves you money — with break-even, lifetime interest, and side-by-side cash flow

How much house can you actually afford? Uses the 28/36 DTI rule with full PITI breakdown

Model the HELOC payment shock — interest-only draw vs amortizing repayment with rate-stress scenarios

Year-by-year wealth comparison: should you rent or buy? See the exact tipping point

Cap rate, cash-on-cash, IRR, NOI — full rental property pro-forma with year-by-year projection

See the eighth wonder of the world: compound growth with monthly contributions, salary growth, and inflation adjustment

Project your 401(k) balance with employer match, IRS limits, catch-up contributions, and Traditional vs Roth tax modeling

Should you contribute to a Roth or Traditional IRA? Fair side-account comparison with LTCG drag

Year-by-year Required Minimum Distribution schedule using the IRS Uniform Lifetime Table III

When to claim Social Security: 62 vs Full Retirement Age vs 70, with exact break-even ages

See the RSU under-withholding gap — supplemental withholding vs your true marginal rate, plus FICA, Medicare, and state

Compare NQSO, ISO qualifying, and ISO disqualifying dispositions side-by-side with AMT modeling

Compute Schedule SE tax with SS wage base, Medicare, Additional Medicare, and the deductible-half offset

Compute Form 1040-ES quarterly payments with the IRC § 6654 safe-harbor underpayment-penalty check

Compute short-term vs long-term capital gains tax with NIIT and the "hold to long-term" scenario

Full Form 1040 estimate with wages, 1099, gains, all 5 filing statuses, standard/itemized, CTC, SE tax, LTCG, NIIT

Size your life insurance need with the DIME method — Debt + Income + Mortgage + Education

Size your disability coverage need — income × replacement %, less SSDI, with short-term vs long-term gap analysis

Wealth comparison: buy term + invest the difference vs whole life cash value over 30 years

Runway in months + Paul Graham's "default alive" check with month-by-month cash projection

MRR, ARR, GRR, NRR, LTV, CAC payback, Rule of 40 — full SaaS unit-economics dashboard from one MRR waterfall

Model founder dilution through option pool, SAFE conversion, and priced rounds (seed + Series A)

Generate JSON-LD schema markup for 16 schema types — instant Google rich results

Preview how your link looks on Facebook, X, LinkedIn, Slack, Discord & iMessage

Generate a robots.txt — and block AI training bots (GPTBot, ClaudeBot, PerplexityBot) with one toggle

Convert any title into a clean SEO-friendly URL slug

Convert YAML to JSON and JSON to YAML — bidirectional, no upload

Calculate the real dollar cost of your meetings — with a live ticker

Build clean Markdown tables — paste from Excel, set column alignment, copy GFM output

Split the bill and calculate tip in seconds

Calculate the exact number of days between any two dates

Minify or beautify CSS instantly in your browser

Encode and decode HTML entities instantly

Calculate width, height, or ratio for any screen or image size

Extract text from any image instantly — 100% in your browser

Encode and decode URLs — encodeURIComponent, encodeURI, and Base64 modes

Convert any JSON to TypeScript interfaces instantly

Focus timer with work, short break, and long break sessions

Build and parse cron expressions with a visual editor

Compress MP4, WebM & MOV videos in your browser — no upload required

Replace any page in a PDF with a signed or updated version — no upload required

Generate favicons in all sizes from an image or emoji — no upload required

Convert Word .docx files to a clean, re-typeset PDF in your browser — nothing uploaded

Calculate percentages, percent change, and reverse percentages instantly

Convert between length, weight, temperature, volume, area, speed, and data units

Calculate exact age, days between dates, and days until any date

Check WCAG color contrast ratios for accessible web design

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files

Build beautiful CSS gradients visually and copy the code instantly

Write a compelling, personalized cover letter in 2 minutes

Write Markdown with a live split-pane preview — download .md or copy HTML

Auto, personal, student & home equity loan calculator with amortization schedule

Combine multiple PDF files into one document — 100% in your browser

Split a PDF by page range or extract individual pages — 100% in your browser

Reduce PDF file size for email and upload — 100% in your browser

Password-protect your PDF files — 100% in your browser

Remove password from your own PDF files — 100% in your browser

Convert PDF pages to JPG or PNG images — 100% in your browser

Extract text, headings, and bold from a PDF into an editable Word document — 100% in your browser

Extract tables from a PDF and download as Excel — 100% in your browser

Make scanned PDFs searchable with OCR — runs in your browser

Build a professional resume that lands interviews

Resize images by pixels, percentage, or max dimension — no upload required

Calculate the hourly rate you actually need to charge as a freelancer

Calculate gross margin, net margin, and markup — and reverse-calculate your price

Calculate sales tax for any US state — add tax or reverse from total

Preview exactly how your page looks in Google search results

Test and debug regular expressions with live match highlighting

Decode and inspect JWT tokens — header, payload, claims, expiry

Merge, reorder, rotate, delete, and split PDF pages — 100% in your browser

Generate UUIDs v1, v4 & v7 instantly in your browser

Build UTM tracking URLs with channel presets, bulk generation, and campaign history

Generate SEO-optimized meta descriptions that boost click-through rate

Generate optimized SEO title tags with pixel-width length checking and keyword placement

Convert JPG, PNG, and WebP images to a PDF in seconds

Full PITI mortgage calculator with amortization schedule and PMI tracking

Convert CSV files to clean JSON instantly — free, private, no upload

Convert JSON arrays to CSV — free, private, instant download

Pick colors and generate beautiful palettes instantly

Format, validate, and minify JSON instantly

Encode and decode Base64 text and files instantly

Compare two texts and highlight the differences instantly

Count words, characters, sentences, and reading time instantly

Convert text between uppercase, lowercase, title case, and more

Remove image backgrounds instantly with AI

Create professional email signatures in seconds

Compress images — typically 60–90% smaller for photos, no visible quality loss

Create and download professional invoices instantly

Calculate your take-home pay after taxes instantly

Create custom QR codes with colors, logos, and styles

Generate secure, random passwords instantly

Generate placeholder text for designs and prototypes instantly