SPDF Commons
A small, careful collection of public-domain works already read into SPDF, in several languages and of several kinds (scanned books, EPUB, LibriVox recordings), free to download, test and cite.
Reviewed Markdown
SPDF Commons is a small collection of public-domain works already read into SPDF: scanned books with their printed folios, EPUBs with their page lists, and LibriVox recordings with their transcripts timed word by word. They are here to be downloaded, opened, searched and cited, to test implementations against real documents, and to show what the format holds.
| Work | Language | Kind | Units | Size | Download |
|---|---|---|---|---|---|
El garrote mas bien dado, y alcalde de ZalameaCalderón de la Barca, Pedro, 1746 · Internet Archive(Calderón de la Barca, 1746, pp. 10-11)Verified on 7 October 2026. Read page by page with the vision engine. Printed page numbers checked by eye against the page images on physical pages 1 ("Fol. 1"), 11, 16, 29 and 32 (the last, with the colophon "Año de 1746"): all match. All 32 folios were read on the page; none is inferred. The lines of the sample ("el honor / es patrimonio del alma") were found on the image of p. 11. | Spanish | scanned book | 32 | 5.7 MB | .spdf inspect |
Sidereus nuncius: Magna, longeqve admirabilia spectacula pandens, suspiciendaque proponens vnicuique, præsertim verò philosophis, atq́; astronomis, quæ à Galileo Galileo patritio Florentino Patauini Gymnasij publico mathematico perspicilli nuper à se reperti beneficio sunt obseruata in Lunæ facie, fixis innumeris, Lacteo Circulo, stellis nebulosis, apprime verò in quatuor planetis circa Iovis stellam disparibus interuallis, atque periodis, celeritate mirabili circumuolutis; quos, nemini in hanc vsque diem cognitos, nouissimè author depræhendit primus; atque Medicea Sidera nuncupandos decrevitGalilei, Galileo, 1610 · Internet Archive(Galilei, 1610, fol. 17r)Verified on 7 October 2026. Foliated book: leaves numbered on the recto. Checked by eye against the page images: physical pages 7, 19, 35, 41 and 63 carry the printed leaf numbers 2, 8, 16, 17 and 28 (cited as fols. 2r, 8r, 16r, 17r, 28r); versos take the number of their leaf in brackets, e.g. [16v] on physical 36, where the text of 16r continues, and [28v] on physical 64, the FINIS page. The two unnumbered leaves inserted after leaf 16 (physical 37-40: Orion and Pleiades star maps, Nebulosa Orionis and Praesepe) have no folio, nor do the title leaf, binding and endpapers. No fragment mixes pages with and without a folio: the opening of 17r ("De Luna, de inerrantibus Stellis") cites fol. 17r. | Latin | scanned book | 68 | 8.7 MB | .spdf inspect |
The Yellow Wall PaperGilman, Charlotte Perkins, 1901 · Internet Archive(Gilman, 1901, pp. 1-3)Verified on 7 October 2026. Read page by page with the vision engine. Printed page numbers checked by eye against the page images on physical pages 13 (p. 1), 40 (p. 28) and 67 (p. 55, the last page of the text): all match, and every page of the text (pp. 1-55) carries a folio read on the page. Front matter, the blank leaves after the text, the binding and the library slips (physical 1-12 and 68-80) have no folio. The title page reads "Charlotte Perkins Stetson"; the record uses the author's later name, Gilman. No fragment mixes pages with and without a folio: the opening of the story ("ancestral halls for the summer") cites pp. 1-3, its fragment starting at the top of p. 1. | English | scanned book | 80 | 5.1 MB | .spdf inspect |
Les Fleurs du malBaudelaire, Charles, 1857 · Internet Archive(Baudelaire, 1857, pp. [19]-20)Verified on 7 October 2026. Read page by page with the vision engine. Printed page numbers checked by eye against the page images on physical pages 14 (p. 6), 51 (p. 43), 55 (p. 47), 137 (p. 129) and 256 (p. 248): all match, with a constant offset of 8 between physical page and folio. Pages without a printed number (the first page of each poem, the table) carry the inferred folio in brackets, e.g. [11] for "Bénédiction" and [128] for "A une dame créole". Of the 102 entries of the book's own table, 96 were found on the page the table gives; of the other six, the table gives p. 43 for "Châtiment de l'orgueil", which begins on p. [44], the dedication (p. 1) has no folio, and four titles were not read as such although their pages are right. Physical 53 prints "44" by mistake and is cited as [45]. Four pages (physical 30, 53, 97 and 225) were refused by the vision engine as recitation of a known text and carry the old OCR layer instead, marked with low confidence: their folios are right, their text is poor. Front matter and endpapers have no folio. | French | scanned book | 264 | 12.8 MB | .spdf inspect |
Die VerwandlungKafka, Franz, 1917 · Project Gutenberg(Kafka, 1917, p. 5)Verified on 7 October 2026. Page numbers of the 1917 Kurt Wolff edition, taken from the page markers of the EPUB (Project Gutenberg's own page list leaves out 11 of them). All 71 pages (5-75) checked: each unit starts exactly at its page marker in the EPUB, with no page missing or repeated; p. 23 starts with "Leibe zu spüren bekommt" and p. 75 is the last page of the story. The Project Gutenberg header and licence carry no folio and are in fragments of their own; the last sentence ("ihren jungen Körper dehnte") cites pp. 74-75, the fragment covering the last paragraph. | German | EPUB | 73 | 1.0 MB | .spdf inspect |
Le avventure di Pinocchio: storia di un burattinoCollodi, Carlo, 1902 · Project Gutenberg(Collodi, 1902, pp. 5-7)Verified on 7 October 2026. Page numbers of the 1902 Bemporad edition, taken from the page markers of the EPUB (Project Gutenberg's own page list leaves out p. 268). All 287 page markers (pp. 5-300) checked: each unit starts exactly at its page marker in the EPUB, with no page missing or repeated. The Project Gutenberg header and licence carry no folio and are in fragments of their own; no fragment mixes pages with and without a folio. | Italian | EPUB | 289 | 5.3 MB | .spdf inspect |
Reliquias de casa velhaMachado de Assis, Joaquim Maria, 1906 · Project Gutenberg(Machado de Assis, 1906, pp. 3-4)Verified on 7 October 2026. Page numbers of the 1906 Garnier edition, taken from the page markers of the EPUB. All 238 page markers (I-III and 3-264) checked: each unit starts exactly at its page marker in the EPUB, with no page missing or repeated. The Project Gutenberg header and licence carry no folio and are in fragments of their own; no fragment mixes pages with and without a folio. | Portuguese | EPUB | 240 | 2.2 MB | .spdf inspect |
L'auca del senyor EsteveRusiñol, Santiago, 1907 · Project Gutenberg(Rusiñol, 1907, pp. 17-19)Verified on 7 October 2026. Page numbers of the first edition (Antoni López, [1907]), taken from the page markers of the EPUB (Project Gutenberg's own page list leaves out pp. 1, 3 and 204). All 263 page markers (pp. 1-280) checked: each unit starts exactly at its page marker in the EPUB, with no page missing or repeated. The Project Gutenberg header and licence carry no folio and are in fragments of their own; no fragment mixes pages with and without a folio. | Catalan | EPUB | 265 | 5.7 MB | .spdf inspect |
Obras escogidasBécquer, Gustavo Adolfo, 1912 · Project Gutenberg(Bécquer, 1912, p. 331)Verified on 7 October 2026. Page numbers of the 1912 Fernando Fé edition, taken from the page markers of the EPUB (Project Gutenberg's own page list leaves out pp. 18, 186, 209 and 250). All 352 page markers (pp. ii-xii and 1-353) checked: each unit starts exactly at its page marker in the EPUB, with no page missing or repeated. The Project Gutenberg header and licence carry no folio and are in fragments of their own; no fragment mixes pages with and without a folio. | Spanish | EPUB | 354 | 5.9 MB | .spdf inspect |
The Tell-Tale HeartPoe, Edgar Allan, 1843 · LibriVox(Poe, 1843, 1:37)Verified on 7 October 2026. Checked without playing the audio. At 2:15, 10:00 and 16:30 the words the file places at that second were compared with an independent local transcription (whisper.cpp) of the same 30-second window: they are the same words, and the median difference between the start times of the matched words is at most 0.4 s (word times are interpolated within the transcriber's segments). Transcript against the Project Gutenberg text: word error rate 0.2 %. | English | audiobook | 21 | 296 KB | .spdf inspect |
El monte de las ánimasBécquer, Gustavo Adolfo, 1861 · LibriVox(Bécquer, 1861, 1:33)Verified on 7 October 2026. Checked without playing the audio. At 2:15, 10:10 and 18:20 the words the file places at that second were compared with an independent local transcription (whisper.cpp) of the same 30-second window: they are the same words, but the file's word times run about 1 s behind (median +0.9 to +1.3 s; they are interpolated within the transcriber's segments). Transcript against the text of the 1912 edition: word error rate 2.8 % (the reader used Wikisource's text). | Spanish | audiobook | 24 | 328 KB | .spdf inspect |
MenuetMaupassant, Guy de, 1882 · LibriVox(Maupassant, 1882, 2:08)Verified on 7 October 2026. Checked without playing the audio. At 2:15, 6:40 and 10:40 the words the file places at that second were compared with an independent local transcription (whisper.cpp) of the same 30-second window: they are the same words, and the median difference between the start times of the matched words is at most 0.2 s (word times are interpolated within the transcriber's segments). Transcript against the Project Gutenberg text: word error rate 1.4 %. | French | audiobook | 14 | 244 KB | .spdf inspect |
The collection manifest commons.spdfl.json
How they were made and checked
Every file was produced with spdf build, the reference producer. The provenance table of each file records which model read each page or each second, with what confidence and when; open any of them in the validator to see it.
Validating a file is not enough: a folio put on the wrong page passes the validator. So, before a work is published here, its printed folios (or, in a recording, its times) are checked by eye against the page images or the transcript, on several pages from the beginning, the middle and the end, and the table above says, for each work, which pages were checked and what was found. A work whose check fails is rebuilt, not published.
The sources are verifiable public-domain works (Project Gutenberg, Internet Archive, LibriVox, Wikisource). The original bytes are named by their SHA-256 in every file, so anyone can check that a file was read from the source it claims.
The manifest
The whole collection is described by an .spdfl.json manifest: one entry per file, with its SHA-256, title, authors, year and download address. Point any SPDF tool at it to fetch or verify the whole set.
Licence
The works are in the public domain. The SPDF files (the reading: transcription, anchors, sections, vectors) are dedicated to the public domain under CC0 1.0.