GUIDES
Step-by-step guides built on the free YYSI toolbox. Each guide records the evidence that fits its type — real test inputs for hands-on tests, reproducible calculations for pricing explainers, sourced event facts for news explainers — plus known limits and sources with check dates.
· 2026-11-12
A sourced timeline of Google’s space-AI moonshot: the 2025 design, the October 2026 launch, the first TPU AI response in orbit, tests ahead, and the 2027 twin-satellite goal. Attributed to Google.
Read guide →· 2026-11-12
What the Taobao MNN team shipped (engine + Pocket-0.3B bilingual model), where the parts live, the reported figures as claims, real entry points, and how to license-check before commercial use.
Read guide →Pricing · 2026-11-11
Plans meter messages, APIs meter tokens - not interchangeable. Three hypothetical workloads (light writing, batch docs, app integration) with reproducible arithmetic and honest sensitivity ranges.
Read guide →Pricing · 2026-11-11
Six original EN/ZH documents tokenized with a real tokenizer; two hypothetical workloads (50 one-off, 500 repeated) computed low/mid/high with caching, batch and retries. Budget examples only.
Read guide →Pricing · 2026-11-11
Billing formula via a teaching rate card, three known-answer examples (no cache, write+read cache, batch), the same math with official-page rates, and per-vendor rules.
Read guide →PDF · 2026-11-11
Real tests on three PDF types: where text-layer extraction succeeds and breaks, the honest scan warning, encrypted/damaged errors, and a verified page-by-page OCR route.
Read guide →· 2026-11-11
What leaked, which file, why your .gitignore may not protect you, and a step-by-step self-check for your repos — with a decision table for rotate/clean/history cases. No hype, sourced.
Read guide →Data · 2026-11-11
A real Excel test on Windows (zh-CN): why UTF-8 CSV opens as mojibake, why one comma can merge columns, why 007 becomes 7 — and the fixes, each verified with downloadable files.
Read guide →· 2026-11-11
We built an original AcroForm sample, filled it in the real browser tool and re-opened the download field by field. What saves correctly, what is refused, and why.
Read guide →· 2026-11-11
18 invalid JSON snippets run through a real formatter with their exact error messages and positions — a message-to-fix dictionary, plus strict JSON vs JavaScript and LLM-output traps.
Read guide →· 2026-11-11
We converted original HEIC samples in the real browser tool and checked what survives: pixel size, orientation, EXIF metadata, transparency. Real numbers, honest limits.
Read guide →Office · 2026-11-11
Two synthetic transcripts (EN/ZH) tested against pre-registered truth: owners, vague deadlines, rejected suggestions, cancelled tasks. Every result, including the two fixes a human still made.
Read guide →· 2026-11-11
Photo receipts to a categorized expense ledger: AI extraction, a paste step, duplicate cleanup, and a verified XLSX template. Real runs, real outputs, honest limits.
Read guide →Images · 2026-11-10
Real test runs of the free YYSI image compressor: exact bytes for photo, transparent logo and screenshot samples, why PNG may refuse a KB target, and the KB vs KiB trap.
Read guide →Office · 2026-11-10
Three original table images — clean screenshot, tilted low-res photo, merged cells — run through YYSI's image-to-table: full outputs, the CSV vs XLSX typing trap, and honest limits.
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