Turn a 5-field cron into plain English and see its next run times — parsed live on your device.
At 09:00, on Monday, Tuesday, Wednesday, Thursday, Friday.
Next runs (your local time)
Thu, Sep 10, 2026, 09:00 AM
Fri, Sep 11, 2026, 09:00 AM
Mon, Sep 14, 2026, 09:00 AM
Tue, Sep 15, 2026, 09:00 AM
Wed, Sep 16, 2026, 09:00 AM
Thu, Sep 17, 2026, 09:00 AM
Standard 5-field cron with *, */n, ranges a-b and lists a,b,c. When both day-of-month and day-of-week are set, cron runs when either matches. Parsed in your browser.
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
How to use the Cron Expression Explainer
Paste a 5-field cron expression, or pick a preset.
Read the plain-English description.
Check the next run times in your timezone.
Easy to use
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
Best quality
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Private & secure
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
Cron, in plain English
Cron expressions are famously easy to misread. Paste one and this spells out exactly when it runs — “At 09:00, on
Monday to Friday” — and lists the next several run times in your local timezone so you can sanity-check it before it
goes live. It supports the full 5-field syntax: wildcards, step values, ranges and lists.
When both day-of-month and day-of-week are restricted, cron fires when either matches, and the next-run calculation
follows that rule. Everything is parsed in your browser. To schedule real work, note this explains cron — it doesn’t
run it.
Frequently asked questions
What cron format does it use?
The standard 5-field crontab format: minute, hour, day-of-month, month, day-of-week. It supports *, step values (*/n), ranges (a-b) and lists (a,b,c).
How are day-of-month and day-of-week combined?
Per the cron standard, when both are restricted the job runs when EITHER matches — the tool computes the next run times with exactly that rule.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.