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Documentation
How it works
Local execution
Local computation tools (excluding AI features) process text and files in your browser without uploading your input to a computation server. Previewing external images or links may still contact their websites.
Instant results
Local tool computation does not require uploading input. Results appear in the output panel for copying. Loading tool modules, cache updates, and remote preview resources may still make network requests.
Online access, local processing
An internet connection is required to open the site and load tools. Offline caching and offline use are no longer supported. Local tools still process input in your browser; AI chat, tasks, assistants and image generation require an online service.
Tool catalog
AI Image Generator
Turn your ideas into images. From social graphics and product concepts to storybook illustrations, describe what you imagine and create it with Vubilo AI. No sign-up. Generate, then download.
| No. | Name | Category | Version |
|---|---|---|---|
| 001 | JSON Formatter & Validator | Text & Data | v1.0.0 |
| 002 | Base64 Encoder / Decoder | Encoding | v1.0.0 |
| 003 | URL Encoder / Decoder | Encoding | v1.0.0 |
| 004 | JWT Decoder | Encoding | v1.0.0 |
| 005 | MD5 Digest | Hash & Security | v1.0.0 |
| 006 | SHA Hash Digest | Hash & Security | v1.0.0 |
| 007 | Random Password Generator | Hash & Security | v1.0.0 |
| 008 | Text Statistics | Text & Data | v1.0.0 |
| 009 | Regex Tester | Text & Data | v1.0.0 |
| 010 | Timestamp Converter | Time & Numbers | v1.0.0 |
| 011 | Base Converter | Time & Numbers | v1.0.0 |
| 012 | HEX, RGB & HSL Color Converter | Time & Numbers | v1.0.0 |
| 013 | UUID Generator | Generators | v1.0.0 |
| 014 | QR Code Generator | Generators | v1.0.0 |
| 015 | Date Difference | Time & Numbers | v1.0.0 |
| 016 | Cron Expression Parser | Time & Numbers | v1.0.0 |
| 017 | Case Converter | Text & Data | v1.0.0 |
| 018 | Text Diff | Text & Data | v1.0.0 |
| 019 | Unicode Escape | Encoding | v1.0.0 |
| 020 | AES Encrypt / Decrypt | Hash & Security | v1.0.0 |
| 021 | Random Number / Picker | Generators | v1.0.0 |
| 022 | URL Slug Generator | Text & Data | v1.0.0 |
| 023 | Image to Base64 | Encoding | v1.0.0 |
| 024 | Time Zone Converter | Time & Numbers | v1.0.0 |
| 025 | PDF Merge | Files & Images | v1.0.0 |
| 026 | PDF Page Extractor | Files & Images | v1.0.0 |
| 027 | Batch Image Compressor / Converter | Files & Images | v1.1.0 |
| 028 | chmod Calculator | Dev Reference | v1.0.0 |
| 029 | HTTP Status Codes | Dev Reference | v1.0.0 |
| 030 | Markdown Preview | Text & Data | v1.0.0 |
| 031 | Placeholder Text (Lorem Ipsum) | Generators | v1.0.0 |
| 032 | JPG / PNG to PDF | Files & Images | v1.0.0 |
| 033 | HEIC to JPG | Files & Images | v1.0.0 |
| 034 | HEIC to PNG | Files & Images | v1.0.0 |
| 035 | HEIC to PDF | Files & Images | v1.0.0 |
Frequently asked questions
Does Vubilo upload what I type?+
Local computation tools do not upload input bodies or selected files to a computation server. AI chat, task mode, tool assistants and image generation send the messages or prompts you submit through our API server to Agnes. Tool module loading, language detection still make network requests. Remote images or styles in Markdown previews may request third-party sites and disclose request URLs and network information. Contact emails you choose to send are handled as described in the privacy policy.
Do I need an internet connection?+
An internet connection is required to open the site and load tools. Offline caching and offline use are no longer supported. Local tools still process input in your browser; AI chat, tasks, assistants and image generation require an online service.
Can I use MD5 to store passwords?+
No. MD5 and SHA-1 both have known collision attacks and are extremely fast to compute, which makes them unsuitable for password hashing. Use Argon2, bcrypt, or scrypt for passwords. The digest tools here are meant for checksums and fingerprints only.
Does the JWT decoder verify the signature?+
No. It only Base64URL-decodes the token and shows the header, payload, and time claims. The verifier must validate the signature with the correct key and algorithm and check expiry, issuer, audience, and other relevant claims. Never trust a token based on decoded contents alone.
How long does a generated QR code last?+
A QR code is just text encoded as an image and never expires by itself. If the encoded content is a link, the code stops being useful when the link dies.
Using a tool
Choose a tool from the catalog, enter text or select files, adjust the options, then run it. Results appear in the output area. Use the available controls to copy results or download files, and save anything you need to keep.
File limits and troubleshooting
Check each tool’s input guidance for supported formats, file counts and size limits. If an error occurs, check the input format and try fewer or smaller files. The first HEIC conversion needs an internet connection to download its decoder. If the problem persists, report the tool name, browser version and error message without sending passwords, keys or private files.
Report a problemPrivacy boundary
The site does not upload tool input to a computation server; remote preview resources and emails you choose to send involve different data handling. Browser storage remembers your theme and manually selected language. See the privacy policy for details.
Privacy Policy