Premium
Engines.
Hand-picked tools optimized for production-grade speed and reliability.
Marketing & SEO
Design & Media
Video Background Studio
Record video with a virtual background. Remove, replace, or blur your background in real-time.
Image Compressor
Compress JPEG, PNG, WebP, and AVIF in the browser. Convert PSD to PNG, JPEG, or WebP. Compare before/after, resize, hit a target size, download a ZIP.
Video Collage Maker
Browser video collage editor with crop, aspect ratios, timeline trim, text overlays, and WebM/MP4 export.
CSS Gradient Generator
Design linear, radial, conic, and mesh CSS gradients with a live preview, then copy CSS, Tailwind, or export PNG — private, in the browser.
Favicon Generator
Create a favicon pack (ICO, PNG, Apple Touch, Android, PSD, webmanifest) from one image — private and free.
Code & DevOps
SVG Shape Generator
Create unique, organic SVG blob shapes with configurable properties.
CSS Animation Builder
Generate @keyframes and copy-paste CSS in the browser. Presets, custom timeline, live preview.
Scroll Animation Generator
Generate scroll-triggered CSS: fade, parallax, stacked cards, path draw. Copy CSS, JS, HTML, or an AI prompt.
Font Pairing Previewer
Preview Google Font pairings with live layouts, spacing controls, and CSS/Tailwind export.
API Response Mocker
Mock JSON from a schema, example, or TypeScript interface. Preview status and headers, copy fetch or curl.
Cron Job Generator
A user-friendly way to build and validate cron job expressions.
.env Validator
Compare .env and .env.example files to find missing or extra variables.
Git Branch Name Generator
Generate conventional git branch names from a type, optional Jira ticket, and a short description — copy git checkout -b in one click.
Game Development
Game Design Doc Generator
Structure your game ideas into a professional GDD and export it as Markdown.
Sprite Sheet Generator
Pack animation frames into a single sprite sheet with a JSON data file.
Retro SFX Generator
Generate 8-bit style sound effects (coins, jumps, explosions) and export as WAV.
2D Procedural Level Generator
Seeded dungeon and platformer maps. Export Tiled TMX for Unity, Godot scenes, Phaser JSON, or importer scripts.
RPG Economy / XP Balancer
Visualize and balance level-up curves, gold drops, and stat progression models.
Auto Hitbox Generator
Trace a sprite silhouette into Godot CollisionPolygon2D / Unity PolygonCollider2D exports.
Loot Table Simulator
Monte Carlo drop-rate simulation with rarity distributions and engine-ready exports.
Why Jaconir?
Built for speed, privacy, and absolute simplicity.
100% Free Forever
No sign-ups, no watermarks, no feature limits. Every tool is completely free for any purpose.
Privacy Architecture
All tools run client-side. Your data is processed in your browser and never reaches our servers.
Production Grade
We focus on high-fidelity, intuitive interfaces that solve real developer problems without friction.
FAQ
Are all the tools on Jaconir completely free?
Yes, 100%. Every tool listed on this page is free to use, with no sign-ups, usage limits, or hidden costs. They are provided to help students, developers, and creators in their daily tasks.
Is my data safe when using these tools?
Absolutely. The vast majority of our tools, including the image, JSON, and text utilities, are designed to be 'client-side.' This means all the processing happens directly in your browser. Your data is never uploaded to our servers, ensuring your privacy and security.
Who are these tools for?
Chemists and students use the NMR lab — impurity solver, shift predictor, splitting simulator and peak assignment. Game developers use the 2D pipeline, from a design document through level generation, sprite sheets, autotiling and audio. Developers and creators get the supporting utilities: asset extraction, .env validation, API mocking, video and image work.
Can I use the output from these tools in commercial projects?
Yes. Any output generated by you using our tools (like a QR code, a color palette, or a compressed image) is yours to use in any personal or commercial project without attribution.
How often are new tools added?
We are constantly working on expanding our suite of free utilities. We aim to add new, useful tools regularly, so be sure to check back often!