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225+ tools for PDF, images, calculators, code, content, audio & more. Open a tool. Use it. Done.
Built because every online tool uploaded our files somewhere. So we rebuilt them in-browser using WebAssembly, pdf-lib, and sharp-in-WASM. Check the Network tab, your files never leave your device.
As seen on
Three steps. Zero uploads. Your files stay yours.
Drag a PDF, image, audio file, or paste text. It stays on your device.
WebAssembly and JavaScript do the work in your browser. Zero network requests.
Get your file back. Nothing was uploaded, nothing was stored, nothing was tracked.
The ones people come back to
Combine multiple PDF files into a single document in seconds.
Compress images to reduce file size without visible quality loss.
Format, validate, and beautify JSON data with syntax highlighting.
Generate customizable QR codes for URLs, text, Wi-Fi, vCards, and more.
Resize images to exact dimensions or by percentage while preserving quality.
Remove image backgrounds with in-browser AI segmentation. Auto-detects people, or use manual color picker.
Open, edit, sort, filter, and download CSV files in your browser. Export as CSV, TSV, or JSON.
The tools people search for most
Calculate deck materials, boards, joists, and total cost for any size deck
How much mulch do you need? Get cubic yards, bags, and cost estimates
Find your 2026 federal tax bracket and see marginal vs effective rates
Calculate weekly work hours, overtime, and gross pay from clock in/out times
Calculate X% of a number, percent increase, decrease, and change between values
Calculate your semester and cumulative GPA with weighted credit hours
Chain tools together, generate content at scale, resize for every platform
Chain tools into visual pipelines. Resize → compress → convert → watermark, all in one flow. 100+ recipes built in.
One post becomes 30 variants across 10 platforms. Custom brand voice, engagement scoring, and a 30-day content calendar. Free.
Upload one photo, get it sized for every social platform. Instagram, Facebook, Twitter, LinkedIn, YouTube. One click.
Premium features. Free to try, unlimited with Pro
Create professional invoices with line items, tax, and PDF export.
Convert images between PNG, JPG, WEBP, GIF, and other formats.
Remove image backgrounds with in-browser AI segmentation. Auto-detects people, or use manual color picker.
Upscale and enhance low-resolution images with smart sharpening. 2x and 4x enlargement.
Join multiple audio files into one seamless track with crossfade support.
Master your audio for Spotify, Apple Music, YouTube and more. EQ, compression, limiting, and LUFS loudness normalization - all in your browser.
Free online calculators for math, finance, health, and everyday life.
Calculate percentages, percentage change, and percentage difference instantly.
Calculate your exact age in years, months, and days from your date of birth.
Calculate your Body Mass Index and find out if you are underweight, normal, or overweight.
Estimate monthly mortgage payments, interest, and amortization schedules.
Calculate tip amounts and split bills between multiple people.
Calculate monthly loan payments, total interest, and payoff schedules.
Convert between hourly, weekly, biweekly, monthly, and annual salary.
Calculate compound interest growth over time with regular contributions.
Add or subtract days, weeks, months, and years from any date.
Calculate your GPA on a 4.0 scale with weighted and unweighted options.
Estimate daily calorie needs based on age, weight, height, and activity level.
Estimate your body fat percentage using US Navy and BMI methods.
Most tools upload your files to their server. We can't. It's not a policy. It's the architecture.
Your files are processed using WebAssembly in your browser. They never touch a server. This isn't a privacy policy. It's how the software works.
No upload, no queue, no download. Processing starts instantly. A 5MB PDF compresses in under a second.
Install as a PWA and use tools without an internet connection. The processing engine runs entirely in your browser.
Open a tool, use it, close the tab. No signup, no email, no “verify your account to download.”
Open a tool. Use it. Done. No signup. No upload. No tracking.