TinyMomentum

Turn photos into paper animations with PaperMotion Pro. This free online tool uses AI to isolate subjects for instant origami-style videos. Customize shadows and edges, then export in HD or green screen mode. No installation required—process everything in your browser. Ideal for social media content and marketing videos.

I built a free online tool for generating and validating Brazilian CPF (Cadastro de Pessoa Física) numbers using the official Brazilian algorithm.

Key features: - Generate valid CPF numbers (single or bulk) - Region-specific or random generation - Built-in CPF validator - Automatic formatting, one-click copy, and TXT download - Clean, responsive interface

Useful for developers working with Brazilian systems, testing, or anyone needing valid CPF numbers for legitimate purposes.

Website: https://gerador-de-cpf.org

Would love to hear feedback from the HN community!

Paper Animator - Free Online Paper Animation Tool I built a free online tool that creates stunning paper unfolding animations from any photo. Think of paper origami coming to life - your images transform into animated paper that unfolds, tears, and moves naturally. Key features: 1.Paper unfolding animation: Converts photos into realistic paper that unfolds and moves 2.Multiple export options: 720p/1080p video export with green screen support 3.Custom border effects: Add white borders, dashed lines, and folded edge effects to your images 4.Real-time preview: See your animation before exporting 5.No registration required: Completely free to use The tool creates convincing paper unfolding effects with natural movement and shadows. Perfect for content creators, marketers, or anyone wanting to add unique visual flair to their projects.

Built a free online tool that converts typed text into realistic handwriting. Uses client-side rendering for privacy, supports multiple paper styles and languages. No registration required, works entirely in the browser. Useful for creating personalized notes, greeting cards, or adding human touch to digital content.

I built a tiny browser-based tool that lets you copy invisible Unicode characters for blank messages, usernames, or formatting tricks.

No ads, no tracking, no login. Works in any browser. Especially useful for games like Free Fire or platforms like Discord, TikTok, etc.

The original version was in Spanish, but now there's a clean English version: https://www.textoinvisible.app/en

Would love feedback or suggestions from the HN crowd!

MakeImageBlackAndWhite.com – Free Online Black and White Image Converter

MakeImageBlackAndWhite.com is a free and privacy-friendly online tool that allows you to convert any color image into black and white instantly — directly in your browser. No account required, no software to install, and no image uploads. All processing is done locally, ensuring your files stay private.

Key Features:

Works with JPG, PNG, WEBP, BMP, and other common formats

Drag and drop your images for instant grayscale conversion

Fast and lightweight, with real-time preview

Completely free to use, with no ads or watermarks

Ideal for photography, design, printing, documents, and creative projects

Convert images to black and white in seconds at: https://www.makeimageblackandwhite.com/

Hi HN,

I just launched Liquid Glass Generator — a free web tool that lets you create stunning, Apple-style liquid glass (glassmorphism) UI effects inspired by iOS 26.

Real-time customization of blur, saturation, transparency, glow, and shadows

Instant CSS & HTML code export, ready to drop into your projects

Designed for frontend developers and UI/UX designers

Mobile-friendly and supports dark mode

No login, no ads, no watermark

I built this to help designers and developers quickly prototype and implement the latest glass UI effects without messing with complex CSS filters.

Check it out here: https://www.liquid-glass.pro

Would love to hear your feedback and feature requests!

Thanks for reading.