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VelnoxLabs gives you fast, private, browser-based utilities. No sign-up required.
Most-used tools by our community.
Tools.image-to-pdf.description
Format and validate JSON payloads.
Resize and compress images in the browser without uploads.
Create professional invoices with tax, discount, and multi-currency support.
Encode and decode Base64 strings.
Build cron expressions visually with human-readable explanations.
Freshly added tools — try them out!
Tools.image-to-pdf.description
Convert images between JPEG, PNG, and WebP formats instantly in your browser with complete privacy.
Compress JPEG, PNG, and WebP images directly in your browser with zero quality compromise.
Eject water and clear dust from phone speakers using sound waves and vibration.
Explore all fully implemented developer tools ready for immediate use.
Tools.image-to-pdf.description
Advanced User-Agent analysis.
Generate and parse ULIDs.
Generate compact URL-friendly IDs.
Build Content Security Policy headers.
Format and validate JSON payloads.
Resize and compress images in the browser without uploads.
Compress JPEG, PNG, and WebP images directly in your browser with zero quality compromise.
Convert images between JPEG, PNG, and WebP formats instantly in your browser with complete privacy.
Create professional invoices with tax, discount, and multi-currency support.
Encode and decode Base64 strings.
Build cron expressions visually with human-readable explanations.
Count words, characters, sentences, and reading time.
Convert CSV data to JSON instantly with custom delimiters.
Convert cURL commands into Python requests code.
Translate cURL to JavaScript fetch and Axios.
Inspect and parse HTTP headers.
Convert JSON payloads into Go struct definitions.
Generate Pydantic models from JSON.
Convert JSON into TypeScript interfaces.
Generate Zod validation schemas from JSON.
Convert between JSON and YAML formats.
Deconstruct URLs into components and query params.
Find MIME types and file extensions.
Create Linux systemd service files.
Test regular expressions against text.
Generate QR codes.
Parse User-Agent strings.
Convert Unix timestamps to dates.
Convert Markdown to HTML live.
Percent-encode and decode URI components.
Generate Version 4 UUIDs.
Generate SHA-256, SHA-512, SHA-384, SHA-1 hashes.
Generate cryptographically strong passwords.
Calculate hashes (SHA-256, SHA-512, SHA-1).
Generate HMAC signatures.
Decode and inspect JWT tokens.
Encode and decode HTML entities.
Convert between HEX, RGB, and HSL.
Convert text between camel, snake, kebab cases.
Generate placeholder text for designs and mocks.
Compare two text blocks.
Combine two names into creative blends, ship names, and brand names.
Convert text into clean, SEO-friendly URL slugs.
Eject water and clear dust from phone speakers using sound waves and vibration.
Calculate exact age in years, months, days, hours.
Calculate restaurant tips and split bills.
Calculate percentages, increase, decrease, and difference.
Generate random numbers with unique-only and sorting options.
Calculate Body Mass Index in imperial or metric units.
Calculate sale prices, savings, and stacked discounts.
Calculate compound growth with monthly contributions.
Calculate monthly loan payments with full amortization schedule.
Convert annual salary to hourly, weekly, monthly, biweekly pay.
Calculate weighted grades, letter grade, GPA.