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Suggest a tool →Featured performance lab
How fast is
your browser?
A serious, private browser gaming benchmark for JavaScript, Canvas, WebGL, frame pacing, display cadence, and gaming API support. No invented hardware facts.
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Flagship performance lab
Browser Gaming Benchmark
Measure browser-native script, graphics, frame consistency, display cadence, latency context, and modern game API support.
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Seller economics
Etsy Fee & Profit Calculator
Price a listing after transaction fees, payment processing, Offsite Ads, shipping, labor, and materials.
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Workshop quoting
Laser Engraving Quote
Turn blanks, machine time, failures, labor, fees, and margin into a defensible customer quote.
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Paid acquisition
True Break-Even ROAS
Include returns, fulfillment, payment fees, and COGS—not just the margin shown in an ad dashboard.
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Parcel shipping
Dimensional Weight Checker
Compare actual and dimensional weight using current UPS and FedEx divisors.
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Audio editing
Seamless Audio Loop Maker
Record or upload audio, trim the repeat, smooth the seam, preview it, and export a WAV loop.
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Local images
Image Upscaler
Enlarge images up to 4× with high-quality resampling and optional detail sharpening.
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File conversion
Image Format Converter
Convert browser-readable images to PNG, JPEG, or WebP with quality control.
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Local images
Exact Image Resizer
Resize to precise pixel dimensions while preserving the original proportions.
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Local images
Image Compressor
Reduce image size with adjustable WebP or JPEG quality—without an upload.
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Color utility
Color Palette Extractor
Pull dominant colors from an image and copy ready-to-use hex values.
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Audio conversion
Audio to WAV Converter
Turn browser-readable audio into a standard 16-bit WAV on your device.
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Data conversion
CSV ↔ JSON Converter
Move tabular data between CSV and JSON, then copy or download the result.
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Text conversion
Markdown to HTML
Convert common Markdown syntax into clean, portable HTML.
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Text utility
Text Cleaner & Case Converter
Fix whitespace, change letter case, and remove duplicate lines.
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Vector utility
SVG Optimizer & Data URI
Clean SVG markup, preview it, download it, or copy a CSS-ready data URI.
No matching tool yet. That sounds like a useful suggestion.
A few non-negotiables
One clear job
Each tool should solve a specific problem without turning into a dashboard.
Private by default
When a job can happen inside your browser, your files stay inside your browser.
No account obstacle
Open the tool and use it. Saving an email address should not be step one.