Skip to content

Tools

Tools165 free tools that run in your browser.PDF toolsMerge, split, compress and convert PDFs.Image toolsCompress, convert, resize and make ID photos.Audio & videoTrim, convert and record audio and video.Text toolsCount, clean, compare and convert text.Developer toolsJSON, encoding, network and security utilities.CSS & designGradients, shadows, colours and layout CSS.CalculatorsEveryday numbers, dates and conversions.

Games

GamesBoard and card games, ready in one click.Board gamesChess, Go, Xiangqi and 14 more. Play a friend online.Card gamesSolitaire, Hearts, Spades and 40+ classics.MahjongEight regional Mahjong variants with friend rooms and bots.Dou DizhuSix Dou Dizhu variants: classic, wild cards, four players and more.

Create & choose

CreatorsAnalyze a public account, review recent posts and plan the next one.VPS pickerDescribe your project. Get a VPS shortlist.

More

TarotA card reading as a prompt for reflection.Skill RankDiscover and compare AI agent skills.CiteProofCheck a bibliography against real records.HACKER_Hackathons, AI competitions and developer challenges.

Read & talk

BlogPractical guides with sources.CommunityReviews, recommendations and red flags.

Tools

Tools165 free tools that run in your browser.PDF toolsMerge, split, compress and convert PDFs.Image toolsCompress, convert, resize and make ID photos.Audio & videoTrim, convert and record audio and video.Text toolsCount, clean, compare and convert text.Developer toolsJSON, encoding, network and security utilities.CSS & designGradients, shadows, colours and layout CSS.CalculatorsEveryday numbers, dates and conversions.

Games

GamesBoard and card games, ready in one click.Board gamesChess, Go, Xiangqi and 14 more. Play a friend online.Card gamesSolitaire, Hearts, Spades and 40+ classics.MahjongEight regional Mahjong variants with friend rooms and bots.Dou DizhuSix Dou Dizhu variants: classic, wild cards, four players and more.

Create & choose

CreatorsAnalyze a public account, review recent posts and plan the next one.VPS pickerDescribe your project. Get a VPS shortlist.

More

TarotA card reading as a prompt for reflection.Skill RankDiscover and compare AI agent skills.CiteProofCheck a bibliography against real records.HACKER_Hackathons, AI competitions and developer challenges.

Read & talk

BlogPractical guides with sources.CommunityReviews, recommendations and red flags.

pi-rsi · Experiment overview

Inspect recorded scores, code ancestry and the evidence behind research knowledge.

pi-rsi · airline satisfaction

Validation AUC progression

× Failed　◇ Processing

Search branches

★ Highest score　× Failed　◇ Processing · Edges show code ancestry

Snapshot and interpretation

Archived data; the page does not poll the running experiment. Search-validation scores and Wiki statuses are not independent confirmation. Original experimental records remain in their source language.

Experiment metadata · Wiki metadata · Frozen protocol