Free Reel Maker
Turn a few lines of text into a 30-second Reel, Short or ad with animated graphics, a free AI voiceover, captions and royalty-free music. No watermark, MP4 download.
Make a video → 3 toolsAmazon Seller Tools
FBA profit and margin calculator using live Amazon fee rates, bulk ASIN extractor, and a listing checker for title, bullet and backend keyword limits.
Open the tools → ReferenceAmazon Fee Tables 2026
Every US referral fee percentage by category, the FBA size tiers, fulfilment fee bands, monthly storage rates and the 250 byte backend keyword limit, in plain scannable tables.
Open the tables → 10 tools10 Free Social Media Tools
Carousel splitter, image resizer, engagement rate calculator, caption counter, YouTube thumbnail downloader, Reels safe zone previewer, hashtag cleaner, font generator, posting time planner and ad budget calculator.
Open the toolkit → MeasurementUTM Campaign URL Builder
Build trackable campaign links for Google Analytics in seconds. No login, no spreadsheet.
Build a link → AI searchGEO Readiness Score
Six questions to see whether AI tools like ChatGPT would recommend your brand, plus your top fixes.
Score my brand → Media planningReach and Frequency Calculator
See the impressions, average frequency and GRPs your media budget actually buys.
Run the numbers →Every tool runs in your browser. Nothing you type or upload is sent to TechMachaw. Some tool pages link to paid products we may earn a commission from, at no extra cost to you.
Which tool should you use?
What are these tools for?
- Free reel maker. Turns a few lines of text into a 15 to 45 second video with animated graphics, a free AI voiceover, captions and royalty-free music, then exports an MP4. For creators and small businesses who need short videos fast.
- Free social media tools. Ten tools for the work that happens before you post: splitting carousels, resizing images per platform, checking caption and hashtag limits, previewing Reels safe zones, calculating engagement rate and working out the best time to post. For creators and social managers.
- Free Amazon seller tools. An FBA profit calculator using current US referral and fulfilment fee tables, an ASIN extractor and a listing checker for title, bullet and backend keyword limits. For anyone selling physical products on Amazon.
- UTM campaign URL builder. Builds correctly formatted tracking links so your analytics can tell newsletter traffic from social traffic. For marketers who need to report on what worked.
- GEO readiness score. Checks whether a page is structured so AI answer engines can quote it. For anyone writing content who wants to appear in AI answers, not just search results.
- Reach and frequency calculator. Converts between reach, frequency, impressions and budget so you can see the trade off before you commit spend. For media planners and anyone buying ads.
Are these tools really free?
Some pages include links to paid products we think are worth the money. Where a link earns us a commission it is labelled, and it never changes what a tool tells you. The editorial policy sets out how this site earns and what it will not do.
Frequently asked questions
Do I need an account to use these tools?
No. There is no sign up and no login. Open a tool page and use it.
Is my data stored?
No. Every calculation happens in your browser. Nothing you enter is sent to a server, saved, or logged.
Can I use these tools on a phone?
Yes. All of them work on mobile, although the image resizing and carousel splitting tools are easier on a larger screen.
Can I use the output commercially?
Yes. Anything you generate with these tools is yours to use in client work or your own business.
New tools are added regularly. If something you need is missing, the contact page takes requests.