Update the Go API and configuration model, with cancellation, progress reporting and safer automation.

Strengthen PDF validation, clarify signature evidence, fix PDF processing issues and address six security advisories. Reduce the Go module download size.

See the upgrade guide for required API and configuration changes, and the release notes for details.

Fix #1407, #1444, #1449, #1457, #1460, #1461, #1465-#1467, #1470, #1472-#1474, #1477, #1479, #1484, #1485, #1487.

Improve large-corpus validation diagnostics by streaming per-file failures, reporting a compact summary, and adding validate --progress for quiet runs.

Harden malformed PDF reading, validation, optimization, encryption handling, and signature diagnostics.

Add automatic CJK wrapping for text watermarks.

Fix #1427, #1459.

Harden API and CLI error handling.

Harden signature, timestamp, PKCS#7, certificate-path, and revocation processing.

Eliminate dependencies by using standard-library error handling and internal LZW and PKCS#7 implementations.

Fix #415, #866, #990, #1051, #1088, #1091, #1101, #1123, #1127, #1161, #1265, #1274, #1279, #1282, #1289, #1302, #1311, #1325, #1326, #1340, #1383, #1385, #1387, #1403, #1404, #1417, #1419, #1431, #1437-#1440, #1448. Add regression coverage for #399, #401, #933, #1059, and #1271.

CLI: Add stdin/stdout support and --force.
Refactor command plumbing and parameter handling.
Harden stream parsing, filter decoding, file path handling, and parser limits.
Reduce default binary size by moving bundled EUTL trust-list certificates behind the pdfcpu_eutl build tag.

Fix #513, #801, #1291, #1296, #1316, #1317, #1327, #1359, #1364, #1373, #1375, #1393, #1394, #1396, #1402, #1410, #1411.

Fix #1319, #1322, #1357, #1381, #1388, #1389

Migrate cli to cobra.

Fix #399, #642, #1055, #1201, #1211, #1215, #1229, #1231, #1255, #1261, #1263, #1267, #1268, #1276, #1278, #1280, #1285, #1292, #1297-#1299, #1307, #1329-#1331, #1334, #1341, #1345, #1353, #1382

Fix #846, #1097, #1112, #1156, #1166, #1173, #1176, #1177, #1183, #1185, #1187, #1188, #1189, #1193-#1195, #1202, #1203, #1216, #1226, #1230, #1231, #1235

Add cert inspect command.

Fix #1056, #1085, #1107, #1113, #1117-#1119, #1142, #1149, #1152, #1163, #1165, #1168, #1171

Add signature & cert commands.

Fix #888, #972, #973, #984, #985, #987, #988, #991, #999, #1001, #1007, #1008, #1010, #1013, #1015-#1017, #1019, #1021, #1025, #1027, #1029, #1034, #1036, #1041, #1047, #1049, #1058, #1064, #1065, #1066, #1067, #1072, #1073, #1076, #1077, #1080, #1081, #1089, #1090, #1098, #1099, #1100, #1111, #1114, #1116

Fix config file handling

Add images list, extract, update cmds.
Add config list, reset cmds.
Add offline flag.

Fix #455, #859, #868, #897, #935, #940, #941, #947, #948, #953, #951, #953, #955, #961, #965

Improve CJK, annotation support.

Fix #628, #687, #767, #819, #830, #862, #867, #871, #881, #884-#887, #890, #891, #895, #898, #903, #907, #908, #910-#912, #914, #915, #918, #921, #924, #926, #930-#932

PDF 2.0 encryption, parser speedup, booklet enhancements.

Fix #821, #823, #826, #828, #832, #834, #835, #838, #839, #841, #844, #849, #851, #852, #855

Add zoom command, basic PDF 2.0 updating.

Fix #628, #724, #756, #758-#760, #765-#766, #769-#774, #780, #783-#784, #786-#787, #793-#796, #798, #802, #805-#811, #813-815, #818

Add pagelayout, pagemode, viewerpref cmds, basic PDF 2.0 validation.

Fix #373, #472, #473, #635, #665, #689, #701, #705, #706, #708, #710, #711, #713, #716, #717, #722, #723, #727, #731-733, #734, #736-740, #742,747

Add bookmarks command.

Fix #506, #604, #621, #657, #659, #660, #663, #664, #666, #667, #669, #671

Bookmark support for merging.

Fix #606, #608, #617, #618, #622, #623, #624, #626, #627, #630-#632, #635-#637, #644, #649, #650, #654

Add cut, ndown, poster commands

Add form, resize commands

Fix #396, add config command

Fix #398

Add create command.

Fix 335, #349, #353, #354, #356, #358, #362, #366, #371, #380, #381, #386, #387, #394, #388

Add annotations, images commands.

Fix #300, #302, #323, #324, #329, #331-336, #338, #341-343, #347, #350

Add right to left stamping

Support webp, RTL Unicode Text.

Fix #271, #273, #285, #287, #293-#299, #301, #303, #305, #307, #311, #313, #316, #319

Add booklet cmd.

Fix #276, #279, #280, #285, #288, #290, #291

Add boxes, crop commands.

Fix #210, #216, #236, #238, #241, #244, #245, #250, #252, #256, #258, #259, #262, #264, #265, #268

Add CJKV font support.

Fix #233

Fix #218, #220-#224, #231,#232. Add config dir & file

Fix #145, #207, #208, #213, #215

Fix #100,#102,#177,#180,#187. Fix #191-197, #199-202

Fix #174

Fix #192

stamps: Add hAlign, margins, border.

Fix #157,#170,#173,#175,#181-184,#188

Support multi-stamping.
Add keywords, properties commands.
Add collect, portfolio commands.

Fix #112,#140,#143,#144,#146,#148,#152

TrueType support.

Fix #126,133,137,138

Fix #113,#114,#117,#119,#121,#123,#130

Fix #101, #103, #107-#109

Fix #100, #104. Use x/image/ccitt.

Transfer repo to org

Fix #95-#97

Fix #94

Fix #92, #93

Redesign API, info cmd.

Fix #87,#89-#91

Fix #88

Add AES-256 encryption

Fix #82, #86 repairs corrupt xref sections.

Fix #85

Fix #80, #81

Fix #77

Fix #75, #76

Fix #74

Support multiline watermarks.

fix #27, #61, #63

Fix #73

Fix #71, #72

Insert & Remove Pages, go mod support.

Fix #69: Correct name parsing.

Cleanup encryption.

Fix stamp transform calc.

Fix #64: locating lastxref.

Add N-Up, Grid commands.

Fix #51, #58.

Add Import and Rotate commands.

Add JPEG support.

Fix #52,#53,#54,#56.

Add ReadSeeker support.

Fix #5,#39,#44.

TIFF: Add support for CCITT decoding.

CCITT fax decoding.

Fix #38, #40, #41.

Add Stamp cmd, fork x/image/tiff.

Extract: Write Flate as PNG.

Fix #25.

Add Runlength filter support.

Fork compress/lzw, fix #21-#23.

Add LZWDecode filter support.

Add name tree caching.

Fix #18.

Redesign extraction API.

Fix #7.

Introduce PDFObject interface.

Add logging interface.

Merge PR #15.

Add List/Add permissions command.

Add Encrypt/Decrypt command.

Fix object freelist management.

Add Attachments command. Fix #9.

Fix #11.

Add examples.

Fix #10.