Last updated 07-30-2026
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AI Detector By Custom Writings
CustomWritings runs a free AI detector inside its HowToWrite hub where students can paste text or upload DOC, TXT, PDF, and PowerPoint files to see what share of a paper looks machine-written. The checker returns an overall percentage and color-codes passages as likely or highly likely AI output, then lets you download a PDF report. It also ships as a browser extension for checking page content without leaving the site you are on.
Most standalone detectors sell themselves as neutral scanners. This one is built by an essay writing company that has offered academic help for 20 years and added combined AI and plagiarism screening to its own order checks in 2023. That parent service context shows up in the framing: the tool targets students who want to self-check before turning work in, not enterprise teams auditing marketing copy. The trade-off is independence, but the upside is a detector sitting next to free plagiarism, citation, and writing guide tools on the same domain.
Students prepping assignments, teachers reviewing suspicious submissions, and writers who lean on grammar tools all have reason to run a pass here. The FAQ notes that heavy grammar assist and stiff, template-like phrasing can sometimes trip the model even on human drafts, so shorter pieces under roughly 275 words may return less reliable scores than a full essay page.
Accepts pasted text plus DOC, TXT, PDF, and PowerPoint uploads on one page
Returns an overall AI percentage with likely and highly likely highlights in the text
Lets you download detection results as a PDF report after a scan
Flags output from named tools including Jasper, Copy.ai, Sudowrite, Rytr, and Writesonic
Offers a browser extension to scan web page content without copying text manually
Recommends at least 275 words for dependable detection on academic-length work
Free checker with no sign-up required for basic scans on the HowToWrite hub.
Supports multiple upload formats including PDF and PowerPoint, not just pasted text.
Highlights specific passages with likely and highly likely tiers instead of only a single score.
Sits beside free plagiarism, citation, and writing guide tools on the same CustomWritings domain.
Names seven commercial AI writers it is designed to catch, from Jasper to Writesonic.
Accuracy drops on texts shorter than about 275 words according to the site's own FAQ.
Heavy grammar-tool edits can sometimes read as AI-generated even on human-written drafts.
Built by an essay writing service, which may raise independence questions for some educators.
No documented API or enterprise dashboard for bulk classroom administration on the site.
Is AI Detector By Custom Writings free?
Yes, AI Detector By Custom Writings is free to use on the HowToWrite hub. The page meta description states there is no sign-up required, and the checker runs without a documented paywall for basic scans.
What file formats does AI Detector By Custom Writings accept?
AI Detector By Custom Writings accepts pasted text and uploaded documents in DOC, TXT, PDF, and PowerPoint formats. The FAQ also notes it can analyze other presentation-style files beyond standard essays.
Does AI Detector By Custom Writings require an account?
No, AI Detector By Custom Writings does not require registration for basic use. The site description says no sign-up is required, though creating an account can help if you want saved check history later.
Which AI writers can AI Detector By Custom Writings detect?
AI Detector By Custom Writings is built to flag text from Jasper, Copy.ai, Sudowrite, Anyword, Writer, Rytr, Writesonic, and similar generators. It uses machine-learning models trained on AI writing patterns rather than checking one model only.
How does AI Detector By Custom Writings mark suspicious passages?
AI Detector By Custom Writings shows an overall percentage beside the text and highlights sections in two colors for likely and highly likely AI generation. You can download that marked report as a PDF after the scan finishes.
Does AI Detector By Custom Writings work on short essays?
AI Detector By Custom Writings is less dependable on very short inputs. Its FAQ says accuracy improves on texts of at least about 275 words, roughly one standard academic page, because short samples give the model fewer patterns to judge.