How to Check a DMARC Record (and Fix a Fail)
Look up your DMARC record with one command or one tool, then read dmarc=fail in Gmail. Six causes to check in order, and how to fix each.
Running it
Performance, security and the maintenance nobody sells you.
Percentage Change vs Percentage Difference
100 to 150 is +50 per cent; 150 to 100 is −33 per cent. Same gap, different base. Which of change, points and difference you want, and what a negative base does.
Fractional CTO vs Full-Time CTO for a SaaS
How a fractional CTO and a full-time CTO differ in scope, risk and cost structure, the stage each fits, and the questions that settle the choice for your SaaS.
How PPF Interest Is Actually Calculated
Interest for a calendar month runs on the lowest balance after the close of the 5th, then is credited once a year. What a deposit on the 6th costs you.
Signs Your SaaS Architecture Needs an Audit
Ten concrete signs that a SaaS architecture review is due, what each one usually means underneath, and what an independent audit should hand back to you.
No-Upload Alternatives to Online File Tools
One difference is checkable in a minute: does your file leave your device? What the big online tools say in their own words, and how to test any of them.
Why Are My Business Emails Going to Spam?
The split between mail you send and mail your website sends, an ordered diagnosis you can run with four free checkers, and the record syntax that fixes it.
Get Your Website Back From a Previous Developer
Domain, DNS, hosting, email, code and the Google accounts, recovered in the order that works. What to copy before you ask, and the checks that prove it is finished.
Images for the Web: Resize, Compress, Convert
The order is the whole trick: resize to the slot the image will sit in, encode it once at that size, then serve WebP. Which widths to use, and what each step costs.
Security Headers Checklist for Business Sites
Seven HTTP response headers that close the most common attacks on a business website, what each one actually does, and how to check the ones you are already sending.
Why Your Website Is Slow, and What Actually Fixes It
Most slow websites are slow for four reasons, and heavy images are only one of them. What Core Web Vitals really measure, and the fixes that move the numbers.
Free tools for this
- Image CompressorCompress JPG, PNG and WebP images online, without uploading them to a server.
- DMARC & SPF CheckerCheck whether your domain’s email is protected by SPF and DMARC, and how strictly.
- DKIM CheckerVerify your DKIM public key is published correctly at its selector.
- DNS CheckerLook up A, AAAA, CNAME, MX, NS and TXT records for any domain in one shot.
- WebP ConverterConvert JPG or PNG to WebP, and WebP back to JPG or PNG, in your browser.
- Compress Image to Target SizeHit an exact file size: compress an image to 100 KB, 50 KB or any target you need.
Building something?
The first call is free and is mostly us asking questions. After it you get the scope in writing and a fixed quote for the first phase.
What happens next
- You send the formTell us the problem.
- We reply by emailWith any questions.
- A free first callThen the scope in writing.