Restore Old Photos: Turn Childhood Pets into Codex Pets
A practical guide to restoring old pet photos and turning them into pixel-art Codex pets. Covers scanning, cleanup, and generating a desktop companion from a faded print.
2026-09-04
PetGen Blog
Guides, comparisons, and deep dives on AI pet generators, pixel-art avatars, and coding companions.
修复老照片：把童年宠物做成 Codex 像素桌宠
一份实用指南：如何修复旧宠物照片，并把它们变成像素风的 Codex 桌宠。涵盖扫描、去黄、去污，以及从一张泛黄照片生成桌面伴侣。
2026-09-04
HD vs 4K Spritesheets: Is the Upgrade Worth It?
HD vs 4K spritesheets for Codex pets: exact resolution, file size, and generation tradeoffs. When the Pro/Unlimited 4K upgrade is worth it, and when HD is already enough.
2026-09-03
Guinea Pig & Ferret: Uncommon Pets Get Pixelated
Guinea pigs and ferrets are beloved but rarely pixelated. This guide shows how to turn your guinea pig or ferret into an adorable Codex pet that captures their personality in pixel form.
2026-09-02
Tortoise Edition: A Long-Lived Pet for Your Desktop
Tortoises are patient, slow, and surprisingly expressive. This guide shows how to turn your tortoise into a Codex pixel pet that matches its calm personality.
2026-08-29
Hamster Edition: Pixelating Small Pets for Codex
Hamsters present a unique challenge for pixel art conversion. Here's how to get the best Codex pet from your hamster photos.
2026-08-25
The Magic of Transparent Backgrounds in Pixel Pets
Why transparent backgrounds make Codex pets feel alive on any desktop — and how PetGen handles the alpha channel correctly.
2026-08-23
Don't Like Your Pet? How to Regenerate the Right Way
Generated a Codex pet you're not happy with? Learn when to regenerate, common mistakes to avoid, and pro tips for getting the pixel companion you want.
2026-08-22
Rabbit Edition: Turn Your Bunny into a Codex Pet
Own a rabbit and want to give them a second life on your Codex desktop? The Rabbit Edition of Codex Pet Generator turns your bunny into an adorable pixel-art companion. Learn which photos work best and how to install your new pet.
2026-08-21
Why Pixel Art Pets Are Taking Over AI Desktops
Pixel art pets exploded in 2026. Here is why the retro aesthetic took over AI coding companions, the cultural moment behind the trend, and what it means for the Codex pet ecosystem.
2026-08-20
Pro vs Unlimited: Which Codex Pet Plan Is Right for You
codex pet pricing comes down to three tiers: free, Pro, and Unlimited. This guide compares the codex pet pro plan and codex pet unlimited plan on limits, resolution, and commercial rights, so you can decide whether a codex pet subscription is worth it before you pay.
2026-08-18
Before You Upload: The 10MB Limit and How to Stay Under It
Codex pet uploads cap at 10MB, and most phone photos sail past it. This guide covers the codex pet upload limit in practice, how to compress a photo under 10MB without wrecking the pixels, and what the generator actually needs.
2026-08-17
Turn Your Avatar into a Codex Pet for Your Desktop
Make an avatar to codex pet from a profile picture or anime icon in minutes. A full avatar pixel pet workflow: which images work, what to fix, and how to install your anime avatar pet in OpenAI Codex.
2026-08-16
Turn Your Dog into a Codex Pet: The Full Photo Guide
Turn your dog into a codex pet in a few minutes. A complete dog pixel pet workflow: which photos work best, how to shoot one, and how to install your dog codex companion in OpenAI Codex.
2026-08-15
Turn Your Cat into a Codex Pet: Full Workflow
Turn your cat into a Codex pet in about five minutes. A full workflow for making a cat pixel pet and installing your cat codex companion in OpenAI Codex, no design skills or sign-up needed.
2026-08-14
The 9 Animation States of a Codex Pet, Explained
What your pixel pet actually does: idle, walking, running, and six more. A codex pet animation guide that walks through all nine states, when each one triggers, and why the idle loop matters more than the flashy moves.
2026-08-13
How Photo Quality Affects Your Pixel Pet Result
Why a blurry, dark, or busy photo gives you a worse pixel pet. A practical pixel pet quality guide: what to check before upload, how much the source photo matters, and the fastest fixes.
2026-08-12
7 Things to Know About Codex Pets (They Don't Change Your Model)
The first question most people ask about the Codex desktop pet is whether it affects the model. It does not. Here are the seven most misunderstood things about Codex pets, and why they neither change your model nor slow down coding.
2026-08-11
Custom Pet Guide: How to Make a Custom Pet with AI
Learn what a custom pet is and how to create one from any photo with an AI pet generator. A beginner-friendly guide to custom cats, dogs, and fantasy pets.
2026-08-11
How to Change Your Pet Style: A Step-by-Step Tutorial
Want a different look for your AI pet? This tutorial shows how to change your pet style, swap themes, and regenerate a fresh custom pet.
2026-08-11
Pet Creation Guide: From Photo to Installable Pixel Pet
A complete pet creation walkthrough: upload, generate, approve, and install your pixel-art pet. Perfect for first-time creators.
2026-08-11
Pets Library Explained: Browse, Save, and Manage Your Pets
What is the pets library? Learn how to browse, save, and manage every custom pet you create, and reuse them across Codex.
2026-08-11
The Ultimate Guide to AI Pet Generators (2026)
Everything about AI pet generators: how they work, what to look for, and how to create a custom pixel-art pet for OpenAI Codex. The complete 2026 guide.
2026-08-11
Get Your First Pet for Free: The Starter Plan Explained
Short version: the codex pet free tier is real. What the Starter plan includes, where the limits are, and when upgrading to Pro actually makes sense. Your first pixel pet takes about five minutes.
2026-08-10
Which Image Formats Work for Codex Pets? JPG vs PNG vs WebP
A practical answer to the codex pet image format question: what Codex actually loads (WebP), which source formats you can upload, and how JPG, PNG and WebP compare for pixel pets.
2026-08-09
Codex Pet Not Showing? 9 Quick Fixes That Work
Your Codex pet installed but will not appear? Nine real causes behind codex pet not showing, from name mismatches in pet.json to the restart everyone forgets, with the exact fix for each.
2026-08-08
How to Install a Custom Codex Pet from the Terminal
Install a custom Codex pet entirely from the command line: where the ~/.codex/pets folder lives, the exact cp / Copy-Item commands for macOS and Windows, and how to verify the install.
2026-08-07
Pixel Art Pet Design Guide for Developers: From Idea to Animated Companion
A practical design guide for turning a mascot idea into a pixel-art Codex pet: silhouette, palette, spritesheet layout, and animation states that read well at small sizes.
2026-08-06
Make Your First Codex Pixel Pet from a Photo in 5 Minutes
Make your first Codex pixel pet from a photo in 5 minutes — no drawing or code. Download the ZIP (spritesheet.webp + pet.json), install to ~/.codex/pets/. Free on Starter.
2026-08-05
Codex Custom Pet: How to Make Your Own Pixel Pet
Learn how to make a custom Codex pet from your own photo — upload, generate, and install a personalized pixel companion into OpenAI Codex. Step-by-step guide with troubleshooting.
2026-08-05
What Is a Codex Pet? A Beginner's Guide to Custom Desktop Companions
A Codex Pet is a pixel-art desktop companion for OpenAI Codex — two files (spritesheet.webp + pet.json) in ~/.codex/pets/. Make yours with Codex Pet Generator.
2026-08-04
How to Create a Codex Pet from Your Company Logo
Turn your company logo into an animated pixel-art pet for OpenAI Codex. A step-by-step guide to branding your team coding companion with your mascot or logo mark.
2026-07-30
5 Creative Ways to Use Your Codex Desktop Pet
Discover five fun and practical ways to use your pixel-art companion beyond the default idle animation.
2026-07-30
Codex Pet Color Customization
Customize your Codex pet colors by generating variations or manually editing spritesheets.
2026-07-30
How to Share Your Codex Pet with Friends
Share your custom Codex pet spritesheet packages with friends and teammates.
2026-07-30
Best Photo Tips for a Perfect Pixel Pet
The best photos for a pixel pet generator: clear subject, simple background, good light, and 512px+. Fix your shot first and get a sharper, cuter pixel pet every time.
2026-07-30
Why Pixel Art Is Perfect for Codex
Pixel art pets are lightweight, animated, and nostalgic.
2026-07-29
How PetGen Turns Your Photo Into a Pixel Pet
Behind-the-scenes look at PetGen AI pipeline.
2026-07-29
Codex Pet Spritesheet Dimensions Guide
Exact specs for Codex pet spritesheets.
2026-07-29
Codex Pet Animation States Explained
Breakdown of the 9 animation states.
2026-07-29
Troubleshooting Codex Pet Installation
Fix invisible pets, glitches, and errors.
2026-07-29
How to Install a Custom Pet in OpenAI Codex (macOS & Windows)
A complete step-by-step guide to installing your PetGen pixel-art companion in OpenAI Codex. Covers both macOS and Windows, with troubleshooting tips for beginners.
2026-07-27
How to Turn Your Pet Photo Into a Pixel-Art Avatar (Free in 2026)
Turn any pet photo into a pixel-art avatar free in under a minute — no design skills. Upload, approve, and download a 9-state animated spritesheet ready for Codex.
2026-07-15
What Is a Pet Spritesheet and pet.json?
A pet spritesheet is the animation grid Codex uses to render your desktop pet. Learn the exact format, the pet.json fields, and how PetGen builds both for you.
2026-07-15
Best AI Pet Generators in 2026: Compared
We compared the top AI pet generators of 2026 — portrait apps, prompt-based tools, and Codex-ready companions. See which one actually outputs an animated desktop pet.
2026-07-15