Tabula
QR-Code-generator
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Tabula | QR-Code-generator | |
---|---|---|
6 | 20 | |
1,733 | 4,831 | |
1.7% | - | |
0.6 | 4.7 | |
16 days ago | 3 months ago | |
Java | Java | |
MIT License | - |
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Tabula
- Tabula – Extract tables from PDF files
- Extract tables from PDF files
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Ask HN: What are some tools / libraries you built yourself?
tabula-java [0], a library for extracting tables from PDF files. It started as a monolithic webapp written in JRuby, and we later extracted the table detection and segmentation logic into a Java library.
[0] https://github.com/tabulapdf/tabula-java
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Tabula: Liberate Data From PDF Tables [jRuby]
Ties together a Cuba web app, the tabula-java library and lauch4j to provide a platform executable.
QR-Code-generator
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How to make a QR code with Stable Diffusion
The funny thing is that no-one AFAICT has realized that the same content can be encoded in different-looking QR codes. Beside the obvious (different error-correction levels), the content itself can be changed while maintaining its semantic meaning (e.g. "https://example.com/foo", "HTTPS://EXAMPLE.COM/foo", or "HtTpS://eXaMpLe.CoM/foo" are all semantically identical) and even the QR encoding itself can be tweaked (e.g. by changing the version and mask, see the demo on https://www.nayuki.io/page/qr-code-generator-library). Each combination would yield a different-looking QR code that would encode the same meaning, and it could therefore allow the diffusion models even greater freedom.
I'm sure somebody will get to this soon.
- QR Code Authentication to perform a function
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I want to secure my btc for a long term hold, but I don't know if I feel comfortable with cold storage.
Make a hidden Veracrypt vault on cold computer. Inside the Veracrypt vault save Keepassxc vaults. Store your seeds inside the Keepassxc vaults. For a paper backup, encrypt your seeds using an offline AES256/512 text encryptor/decryptor. Encode the encrypted text using an offline qrcode generator. Print out the qrcode. Test recovery using a dummy wallet. Be sure you can scan and decrypt. Bonus: Laser etch the qrcodes on metal plates. Make a multi-factor recovery vault, in case you forget your passwords. Shimar's secret sharing scheme is a useful tool for making your recovery vault. Never store your seed unencrypted anywhere, ever. Never input your seed on an online computer, ever. Always protect your seeds with something you know (password), something you have (vaults and keyfiles). Do not upload your vault to the cloud. Keep backups in multiple locations. Necessary tools: Cold computer: Any old computer will do. Just physically disable network access. Veracrypt: https://www.veracrypt.fr/code/VeraCrypt/ KeepassXC: https://keepassxc.org/ Cross-platform, open-source text string encryptor. https://github.com/a3diti/aes256-offline/ Cross-platform, open source QR code generators: https://kazuhikoarase.github.io/qrcode-generator/js/demo/ https://github.com/amanuel/JS-HTML5-QRCode-Generator https://github.com/nayuki/QR-Code-generator Shamir's Secret Sharing: https://github.com/paritytech/banana\_split
- Safe place for store keys? safe from robbers and from natural disasters. Any suggestion?
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What are some best practices for securely storing my 12-word seed phrase and how can I recover my funds if I accidentally lose or forget my seed phrase?
Necessary tools: Cold computer: Any old computer will do. Just disable network access. Veracrypt: https://www.veracrypt.fr/code/VeraCrypt/ KeepassXC: https://keepassxc.org/ Cross-platform, open-source text string encryptor. https://github.com/a3diti/aes256-offline/ Cross-platform, open source QR code generators: https://kazuhikoarase.github.io/qrcode-generator/js/demo/ https://github.com/amanuel/JS-HTML5-QRCode-Generator https://github.com/nayuki/QR-Code-generator Cross-platform, open-source text string encryptor. https://github.com/a3diti/aes256-offline/ Shamir's Secret Sharing: https://github.com/paritytech/banana\_split
- How do you safely store/hide your seed phrase from your family?
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Ever wondered how a QR code works?
I probably know this only because back in time I wrote a QR code generator in JavaScript [1] which was also one of such libraries reviewed by Nayuki [2], and as I haven't actually implemented a decoder my knowledge stops there. Sorry :-)
[1] https://github.com/lifthrasiir/qr.js
[2] https://www.nayuki.io/page/qr-code-generator-library
- Can someone help me with this QR code generator?? Willing to pay for help if needed!!
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Barcode Detection API
I guess it helps to understand how to generate a QR code: https://www.nayuki.io/page/qr-code-generator-library (see also the references at the end)
Good luck. ;-)
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qr code encoding
i think i found what i was looking for
What are some alternatives?
OpenPDF - OpenPDF is a free Java library for creating and editing PDF files, with a LGPL and MPL open source license. OpenPDF is based on a fork of iText. We welcome contributions from other developers. Please feel free to submit pull-requests and bugreports to this GitHub repository.
shc-extractor - Extract the JSON payload from SHC QR codes (i.e Québec Covid Vaccination QR Codes)
Open HTML to PDF - An HTML to PDF library for the JVM. Based on Flying Saucer and Apache PDF-BOX 2. With SVG image support. Now also with accessible PDF support (WCAG, Section 508, PDF/UA)!
emv-qrcode - Java Based EMV QR Code Generator and Parser (MPM, CPM)
vscode-jq - jq LiveView Extension for VS Code
CyberChef - The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
cakephp-swagger-bake - Automatically generate OpenAPI, Swagger, and Redoc documentation from your existing CakePHP code.
zint - A barcode encoding library supporting over 50 symbologies including Code 128, Data Matrix, USPS OneCode, EAN-128, UPC/EAN, ITF, QR Code, Code 16k, PDF417, MicroPDF417, LOGMARS, Maxicode, GS1 DataBar, Aztec, Composite Symbols and more.
intercooler-js - Making AJAX as easy as anchor tags
lowdefy - The config web stack for business apps - build internal tools, client portals, web apps, admin panels, dashboards, web sites, and CRUD apps with YAML or JSON.
panel - Pterodactyl® is a free, open-source game server management panel built with PHP, React, and Go. Designed with security in mind, Pterodactyl runs all game servers in isolated Docker containers while exposing a beautiful and intuitive UI to end users.
Nayuki-web-published-code - Complete collection of code files (*.java/js/py/cpp/etc.) published on Project Nayuki website.