Tools
Handy little tools I built to solve everyday work annoyances. All free, no sign-up.
Got a minified JSON blob from an API? Paste it here to pretty-print and validate.
Paste a cron expression and get a plain-English explanation. Build new ones with a form.
Test regular expressions with real-time match highlighting and capture group extraction.
Encode text to Base64 or convert images to data URIs. A dev staple.
Encode and decode URL strings. Also parses full URLs into their individual components.
Generate UUID v4 identifiers instantly. Batch up to 100 at a time.
Get MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.
Paste two blocks of text and see exactly what changed — additions in green, deletions in red.
Staring at 1712300400 and have no idea what time that is? Paste it and find out.
Generate placeholder text by paragraph count. Perfect for mockups and prototypes.
Compress, convert, and manipulate images and files.
Drop an image, adjust quality, download the compressed file. Runs entirely in your browser.
Convert between JPG, PNG, and WebP. Drop an image, pick a format, download.
Upload multiple images and combine them into a single PDF. Drag to reorder.
Upload a screenshot, draw boxes, arrows, and text. Great for bug reports.
Upload an image and generate all favicon sizes with downloadable PNGs and HTML tags.
Merge multiple PDFs, split pages, or extract specific pages. All in your browser.
Count, convert, preview, and read text aloud.
Paste text and see word count, character count, paragraphs, and reading time in real time.
Switch text between UPPER, lower, Title, camelCase, snake_case, kebab-case, and more.
Write Markdown on the left, see the rendered result on the right. Copy the HTML when done.
Type text and have your browser read it aloud. Choose language and speed.
Colors, gradients, ratios, and tables for frontend design.
Convert between HEX, RGB, and HSL with live preview and WCAG contrast checker.
Build linear and radial gradients visually. Copy the CSS when it looks right.
Enter width or height and get the proportional dimension for any ratio.
Edit a table like a spreadsheet and get clean HTML code you can copy-paste.
Tracking links, QR codes, timers, invoices — work smarter.
Generate UTM tracking links in seconds with one-click source presets.
See how your page looks in Google results and social shares before you publish.
Type a URL or any text and get a QR code you can customize and download.
Generate strong random passwords with customizable length and character types.
Pick your trip type and get a packing list. Check things off so you never forget anything.
25 minutes of focus + 5 minutes of rest. Get notified when time's up.
Fill in line items and amounts, auto-calculate totals, export to PDF.
Paste a JSON array and convert it to CSV. Download the file and open in Excel.
Loans, investments, retirement — run the numbers before you decide.
See your monthly payment, total interest, and full amortization schedule for any home loan.
Plug in your loan details to see monthly payments, total interest, and how extra payments speed things up.
See how regular contributions and compound interest grow your money over 10, 20, or 30 years.
Find out if your savings and contributions will last through retirement.
Set your target amount and deadline, then see exactly how much to save each month.
See how long it takes to pay off your balance and how much interest you'll end up paying.
Plug in what you paid and what you got back to see your real CAGR and how it stacks up against benchmarks.
Enter your costs and pricing to find out how many units you need to sell to break even.
Enter your monthly salary and instantly see your take-home pay after insurance, tax, and pension deductions.
Add your appliances and see what they actually cost you each month on Taiwan's tiered rates.
How much does it cost to raise a child from birth to college? Pick a profile and see the 22-year total.
Profit calculators, listing optimization, conversion tracking, and customer service templates for online sellers.
See what you actually keep after platform fees, payment processing, and shipping costs.
Paste your product title and check length, keywords, and essential listing elements.
Plug in your traffic numbers and see exactly where your sales funnel is leaking.
Ready-to-use reply templates for common seller scenarios. Pick, customize, copy.
Everyday budget estimators for travel, commuting, food, renovations, and more.
Calculate your exact age from a birthday, or find the difference between any two dates.
Enter your LMP or conception date to calculate due date, gestational week, and prenatal milestones.
See how many days you've been together and when your next milestone is coming up.
Estimate your ovulation day, fertile window, and safe period with a color-coded cycle calendar.
Convert between hourly, monthly, and annual pay. See your overtime rate and compare with minimum wage.
How much is this meeting really costing? Enter attendees and salaries to find out.
Cooking, eating out, or a mix? See how much you spend on food each month.
Car, scooter, bus, or metro — which commute is cheapest? Compare them all side by side.
Compare different discount types — percentage off, fixed discount, BOGO — and find the best deal.
Pick a destination and trip length, get a full budget breakdown for lodging, transport, food, and more.
Enter your home size and style preference to estimate costs for demolition, plumbing, tiling, and more.
Tables, venue, photography — how much does a wedding really cost? See the full breakdown and gift income estimate.
Is renting or buying cheaper long-term? Find your break-even year with an interactive cost comparison chart.