What is RSVP speed reading?
RSVP stands for rapid serial visual presentation: instead of moving your eyes along lines of text, the words come to you, one at a time, in the same place on the screen. It's the idea behind every RSVP speed reader, including Grimoire.
Why ordinary reading has a speed limit
On a printed page your eyes don't glide smoothly. They jump from one spot to the next in quick movements called saccades, and pause on each spot — a fixation — for roughly a quarter of a second to take in a word or two. Between jumps you see very little. On top of that, a good share of eye movements go backwards: re-reading a word you've already passed, often without noticing.
Those jumps and returns are part of why most adults read silently at somewhere around 200–300 words per minute. A widely cited 2019 review of the research put the average for non-fiction at about 238 words per minute.
What RSVP changes
An RSVP reader flashes each word at a fixed point. Your eyes stop travelling, so there are no saccades to plan and no line ends to find, and because each word disappears as the next arrives, there is nothing to drift back to. You set the pace in words per minute, and the reader keeps it.
- A fixed focal point. Every word appears in the same place, so your gaze can stay still.
- An anchor letter. Words are positioned so that one letter always sits at the same spot, so your eye never has to search for where a word begins. Grimoire pins the middle letter of every word to the centre and marks it in colour, so long and short words arrive already aligned.
- A steady rhythm. Good RSVP readers don't use a perfectly even beat: they linger a little longer at full stops, commas and long words, which makes the stream far easier to follow.
How fast can you read with RSVP?
Most people find 300–400 words per minute comfortable within a session or two, and many go well beyond that with practice. Above about 500–600 words per minute the experience changes: you'll keep the gist of easy material, but details start to slip. That's the honest trade-off of speed reading in any form — research consistently finds that comprehension falls as speed rises — so the useful skill is choosing the right speed for what you're reading.
Where RSVP works best — and where it doesn't
- Great for: articles, essays, emails, fiction, and the long middle stretch of non-fiction books — text you read straight through.
- Harder for: tables, equations, code, and dense technical passages you need to study, where looking back is the point. Switch to a full-page view for those; in Grimoire, press T for the full text or B for the two-page book view, then click any word to pick the stream up from there.
Trying RSVP in Grimoire
Grimoire is a free RSVP speed reader that runs in your browser. Paste text, drop in a PDF or EPUB, or give it the address of an article, then press Play. Free reading goes up to 475 words per minute and 5,000 words per document; Pro raises that to 2,000 words per minute with no length limit.
Questions people ask
What does RSVP stand for?
Rapid serial visual presentation: showing words (or small groups of words) one after another at a fixed position, at a set speed.
Does RSVP speed reading hurt comprehension?
At comfortable speeds, most people follow normal text well. At very high speeds comprehension drops, as it does with any speed-reading method. Read important material slower, and use a full-page view for anything you need to study.
Is RSVP the same as Spritz?
Spritz is one company's RSVP product. RSVP itself is a general technique that researchers have studied for decades, and many readers use it, including Grimoire.
Is Grimoire free?
Yes. The free version reads any text, PDF or EPUB at up to 475 words per minute and 5,000 words per document, with no account needed.